{"id":126195,"date":"2026-04-15T09:15:17","date_gmt":"2026-04-15T09:15:17","guid":{"rendered":"https:\/\/www.seeedstudio.com\/blog\/?p=126195"},"modified":"2026-04-15T09:15:22","modified_gmt":"2026-04-15T09:15:22","slug":"openuc2-qbox-xiao-esp32-c3","status":"publish","type":"post","link":"https:\/\/www.seeedstudio.com\/blog\/2026\/04\/15\/openuc2-qbox-xiao-esp32-c3\/","title":{"rendered":"openUC2 qBOX: Quantum Physics Experiments for Every Classroom, Powered by XIAO ESP32-C3"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"126195\" class=\"elementor elementor-126195\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-318a050b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"318a050b\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7e3b6236\" data-id=\"7e3b6236\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-fbdd478 elementor-widget elementor-widget-text-editor\" data-id=\"fbdd478\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be35e9fd\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t<p><span style=\"font-weight: 400;\">They say that anyone who claims to understand quantum physics is lying. The <\/span><a href=\"https:\/\/openuc2.com\/\"><b>openUC2<\/b><\/a><span style=\"font-weight: 400;\"> team doesn\u2019t claim to have solved that problem \u2014 but they have built something remarkable: a portable, open-source experiment kit that lets high school students, university classes, and curious makers perform real quantum physics experiments right on their desks.<\/span><\/p><p dir=\"ltr\" style=\"line-height: 1.38; margin-top: 12pt; margin-bottom: 12pt;\"><span style=\"font-weight: 400;\">The qBOX (Quantum Box) is the latest creation from openUC2, the open-source \u201cRaspberry Pi for optics\u201d platform. Funded by the <\/span><a href=\"https:\/\/www.bmftr.bund.de\/EN\/Home\/home_node.html\"><span style=\"font-weight: 400;\">German Federal Ministry for Research, Technology, and Space (BMFTR)<\/span><\/a><span style=\"font-weight: 400;\">, it packages more than ten experiments \u2014 from measuring the speed of light with a Michelson interferometer to detecting quantum spin states through <\/span><a href=\"https:\/\/docs.openuc2.com\/usage\/disc\/qbox\/ODMR\/en\/odmr_intro_eng\"><b>Optically Detected Magnetic Resonance (ODMR)<\/b><\/a><span style=\"font-weight: 400;\"> \u2014 into a set of snap-together modular cubes that need nothing more than a flat surface to operate.<\/span><\/p><p><!-- \/wp:paragraph --><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5ab6434c e-flex e-con-boxed e-con e-parent\" data-id=\"5ab6434c\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3bd47d7a elementor-widget elementor-widget-image\" data-id=\"3bd47d7a\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be362a07\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1240\" height=\"822\" src=\"https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/Quantum-Box-with-all-the-parts-in-one-package.png\" class=\"attachment-full size-full wp-image-126201\" alt=\"openUC2 qBOX ODMR setup layoutwith all the parts\" srcset=\"https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/Quantum-Box-with-all-the-parts-in-one-package.png 1240w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/Quantum-Box-with-all-the-parts-in-one-package-300x199.png 300w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/Quantum-Box-with-all-the-parts-in-one-package-1030x683.png 1030w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/Quantum-Box-with-all-the-parts-in-one-package-768x509.png 768w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/Quantum-Box-with-all-the-parts-in-one-package-32x21.png 32w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/Quantum-Box-with-all-the-parts-in-one-package-1024x679.png 1024w\" sizes=\"(max-width: 1240px) 100vw, 1240px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-367b1962 elementor-widget elementor-widget-text-editor\" data-id=\"367b1962\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be363151\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t<p style=\"text-align: center;\"><em>Quantum Box with all the parts in one package<\/em><\/p><p><!-- \/wp:paragraph --><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-20a35b8d elementor-widget elementor-widget-text-editor\" data-id=\"20a35b8d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be3637d9\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t<p><span style=\"font-weight: 400;\">At its core is a <\/span><a href=\"https:\/\/www.seeedstudio.com\/Seeed-XIAO-ESP32C3-p-5431.html?utm_source=Seeedblog\"><b>Seeed Studio XIAO ESP32-C3<\/b><\/a><span style=\"font-weight: 400;\"> paired with a custom microwave synthesizer board. The XIAO serves a sleek web app over Wi-Fi, turning any smartphone into a lab console: tap \u201cStart\u201d and watch as the controller sweeps microwave frequencies and plots the fluorescence of a nitrogen-vacancy diamond in real time. The result? A live demonstration of quantum spin flips and the Zeeman effect that previously required equipment costing thousands of euros.<\/span><\/p><p><span style=\"font-weight: 400;\">Everything is open source \u2014 hardware, firmware, and documentation \u2014 and the project actively invites the community to design new experiment modules, contribute code, and push the boundaries of what\u2019s possible in science education.<\/span><\/p><p><!-- \/wp:paragraph --><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-59f19a2d elementor-widget elementor-widget-heading\" data-id=\"59f19a2d\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be3641de\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span><h3 class=\"elementor-heading-title elementor-size-default\">Hardwares<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-786f6f8f elementor-widget elementor-widget-text-editor\" data-id=\"786f6f8f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be3648ae\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t<p><span style=\"font-weight: 400;\">Despite its compact and classroom-friendly design, qBOX is built with a carefully selected set of components that make real quantum optics experiments possible:<\/span><\/p><ul><li style=\"list-style-type: none;\"><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.seeedstudio.com\/Seeed-XIAO-ESP32C3-p-5431.html?utm_source=Seeedblog\"><b>Seeed Studio XIAO ESP32-C3<\/b><\/a><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Green laser module<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Dichroic beam-splitter cube<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Focusing lens and mirrors<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Micro-diamond sample with nitrogen-vacancy (NV) defect centres<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Photodetector<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Polarisation filters<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Beam splitters for interferometry<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Custom PCB adapter board for microwave synthesis<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Permanent magnets<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">openUC2 modular cube system<\/span><\/li><\/ul><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-45f2c69 e-con-full e-flex e-con e-child\" data-id=\"45f2c69\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-09284ff e-flex e-con-boxed e-con e-child\" data-id=\"09284ff\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1d63246 elementor-widget elementor-widget-image\" data-id=\"1d63246\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be366924\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"640\" height=\"344\" src=\"https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/ODMR-setup-layout.png\" class=\"attachment-large size-large wp-image-126200\" alt=\"openUC2 qBOX ODMR setup layout\" srcset=\"https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/ODMR-setup-layout.png 868w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/ODMR-setup-layout-300x161.png 300w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/ODMR-setup-layout-768x412.png 768w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/ODMR-setup-layout-32x17.png 32w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-74e7e65 elementor-widget elementor-widget-image\" data-id=\"74e7e65\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be367be1\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"640\" height=\"480\" src=\"https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/ODMR-setup-1030x773.jpg\" class=\"attachment-large size-large wp-image-126197\" alt=\"openUC2 qBOX ODMR setup\" srcset=\"https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/ODMR-setup-1030x773.jpg 1030w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/ODMR-setup-300x225.jpg 300w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/ODMR-setup-768x576.jpg 768w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/ODMR-setup-1536x1152.jpg 1536w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/ODMR-setup-2048x1536.jpg 2048w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/ODMR-setup-32x24.jpg 32w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/ODMR-setup-1024x768.jpg 1024w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-00c5825 elementor-widget elementor-widget-text-editor\" data-id=\"00c5825\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be36834b\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t<p style=\"text-align: center;\"><em>ODMR setup layout<\/em><\/p><p><!-- \/wp:paragraph --><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-512e6cd0 elementor-widget elementor-widget-spacer\" data-id=\"512e6cd0\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be368a96\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-69238e5d elementor-widget elementor-widget-heading\" data-id=\"69238e5d\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be3690d4\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span><h3 class=\"elementor-heading-title elementor-size-default\">How openUC2 qBOX Works<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-55f36cb2 elementor-widget elementor-widget-text-editor\" data-id=\"55f36cb2\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be3697ab\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t<p><span style=\"font-weight: 400;\">The qBOX ships with more than ten hands-on experiments grouped into three major learning areas: <\/span><b>Polarisation, Interference, and Quantum States<\/b><span style=\"font-weight: 400;\">. Its flagship demonstration is <\/span><a href=\"https:\/\/docs.openuc2.com\/usage\/disc\/qbox\/ODMR\/en\/odmr_intro_eng\"><b>ODMR (Optically Detected Magnetic Resonance)<\/b><\/a><span style=\"font-weight: 400;\">, an experiment that allows users to explore magnetic-field sensing through quantum effects in diamond \u2014 something normally reserved for advanced research labs.<\/span><\/p><p><span style=\"font-weight: 400;\">In the ODMR setup, a green laser is focused onto a tiny diamond containing engineered nitrogen-vacancy centres. When the laser excites these defects, the diamond emits red fluorescence. A dichroic beam-splitter cube separates the green excitation light from the red fluorescence, allowing a photodetector to measure how brightly the diamond is glowing.<\/span><\/p><p><span style=\"font-weight: 400;\">This is where the <\/span><a href=\"https:\/\/www.seeedstudio.com\/Seeed-XIAO-ESP32C3-p-5431.html?utm_source=Seeedblog\"><span style=\"font-weight: 400;\">XIAO ESP32-C3<\/span><\/a><span style=\"font-weight: 400;\"> comes in. Mounted with a custom microwave synthesizer board, the XIAO sweeps microwave frequencies across the diamond\u2019s resonance range. At a specific frequency, some electrons transition through a \u201cdark\u201d state instead of fluorescing, causing a visible dip in the detected signal. That dip corresponds to a quantum spin transition.<\/span><\/p><p><span style=\"font-weight: 400;\">When a permanent magnet is placed near the diamond, the resonance peak splits into two \u2014 a direct demonstration of the <\/span><b>Zeeman effect.<\/b><span style=\"font-weight: 400;\"> In other words, users are not just reading about quantum physics; they are assembling and operating a real optical magnetometer on a desk or classroom table. Through the XIAO-hosted web app, users can start measurement sweeps, monitor fluorescence intensity live, and view the resulting curve directly on a smartphone or laptop with no separate app installation required. Check out the short demo video showing the ODMR kit in action.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7b186ade elementor-widget elementor-widget-video\" data-id=\"7b186ade\" data-element_type=\"widget\" data-settings=\"{&quot;youtube_url&quot;:&quot;https:\\\/\\\/youtu.be\\\/kvIsYYS_a6E&quot;,&quot;video_type&quot;:&quot;youtube&quot;,&quot;controls&quot;:&quot;yes&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be36a493\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t<div class=\"elementor-wrapper elementor-open-inline\">\n\t\t\t<div class=\"elementor-video\"><\/div>\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-62505a6 elementor-widget elementor-widget-text-editor\" data-id=\"62505a6\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be36ab32\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t<p><span style=\"font-weight: 400;\">The XIAO ESP32-C3 handles two critical roles in this workflow. First, it drives the custom adapter board that generates tunable microwave signals for the ODMR experiment. Second, it reads the analog output from the photodetector to capture fluorescence intensity in real time. Its compact size, built-in Wi-Fi, and responsive control capabilities make it an ideal fit for turning qBOX into a portable browser-controlled lab platform.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1b40bb2 elementor-widget elementor-widget-image\" data-id=\"1b40bb2\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be36bc4c\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"429\" src=\"https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/ODMR-signal-1030x690.png\" class=\"attachment-large size-large wp-image-126202\" alt=\"ODMR signal with XIAO\" srcset=\"https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/ODMR-signal-1030x690.png 1030w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/ODMR-signal-300x201.png 300w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/ODMR-signal-768x515.png 768w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/ODMR-signal-1536x1029.png 1536w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/ODMR-signal-2048x1372.png 2048w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/ODMR-signal-32x21.png 32w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/ODMR-signal-1024x686.png 1024w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-de317f6 elementor-widget elementor-widget-text-editor\" data-id=\"de317f6\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be36c2e3\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t<p style=\"text-align: center;\"><i><span style=\"font-weight: 400;\">Live ODMR signal captured through the XIAO-hosted web interface.<\/span><\/i><\/p><p><!-- \/wp:paragraph --><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-171a9a68 elementor-widget elementor-widget-heading\" data-id=\"171a9a68\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be36c923\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span><h3 class=\"elementor-heading-title elementor-size-default\">More Than One Experiment Box<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3b11410a elementor-widget elementor-widget-text-editor\" data-id=\"3b11410a\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be36cf9c\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t<p><span style=\"font-weight: 400;\">What makes qBOX especially exciting is that ODMR is only one part of the experience. The platform also supports a wide range of optics and photonics experiments, including crossed polarizers, the three-polarizer paradox, stress-induced birefringence, double-slit diffraction, single-slit and grating experiments, <\/span><a href=\"https:\/\/docs.openuc2.com\/usage\/disc\/qbox\/MichelsonInterferometer\/\"><b>Michelson interferometry<\/b><\/a><span style=\"font-weight: 400;\">, Mach\u2013Zehnder interferometry, measuring the speed of light, and even a quantum eraser setup.<\/span><\/p><p><span style=\"font-weight: 400;\">Because all of these experiments use the same modular cube architecture, students and makers can learn by physically assembling optical paths, aligning lasers, swapping components, and collecting real data \u2014 much like they would in a professional photonics lab, but in a far more accessible and affordable format. Teachers gain a turnkey platform for hands-on STEM and quantum physics education, while researchers and advanced users get a rapid-prototyping system they can extend with new modules and configurations.<\/span><\/p><p><span style=\"font-weight: 400;\">The firmware running on the XIAO ESP32-C3 is written in Arduino\/C++ and combines Wi-Fi web serving, microwave synthesizer control through SPI, and ADC readout for the photodetector. The web interface is served directly from the XIAO\u2019s flash memory, which keeps the entire user experience lightweight and self-contained. According to the project materials, one of the main technical challenges was synchronizing the microwave sweep with each fluorescence measurement precisely enough to generate a reliable dip curve in such a compact system.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-73aa909 elementor-widget elementor-widget-image\" data-id=\"73aa909\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be36e270\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"384\" src=\"https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/Map-of-all-experiments-1030x618.jpeg\" class=\"attachment-large size-large wp-image-126199\" alt=\"Map of all experiments\" srcset=\"https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/Map-of-all-experiments-1030x618.jpeg 1030w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/Map-of-all-experiments-300x180.jpeg 300w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/Map-of-all-experiments-768x461.jpeg 768w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/Map-of-all-experiments-32x19.jpeg 32w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/Map-of-all-experiments-1024x615.jpeg 1024w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/Map-of-all-experiments.jpeg 1466w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-eab7c58 elementor-widget elementor-widget-image\" data-id=\"eab7c58\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be36f43a\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"348\" src=\"https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/Michelson-Interferometer-layout-1030x560.png\" class=\"attachment-large size-large wp-image-126198\" alt=\"Michelson Interferometer layout\" srcset=\"https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/Michelson-Interferometer-layout-1030x560.png 1030w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/Michelson-Interferometer-layout-300x163.png 300w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/Michelson-Interferometer-layout-768x418.png 768w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/Michelson-Interferometer-layout-1536x836.png 1536w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/Michelson-Interferometer-layout-32x17.png 32w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/Michelson-Interferometer-layout-1024x557.png 1024w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/04\/Michelson-Interferometer-layout.png 2048w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-23a4b11 elementor-widget elementor-widget-text-editor\" data-id=\"23a4b11\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be36fa85\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t<p style=\"text-align: center;\"><em>Michelson Interferometer layout<\/em><\/p><p><!-- \/wp:paragraph --><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4f36a047 elementor-widget elementor-widget-heading\" data-id=\"4f36a047\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be37008f\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span><h3 class=\"elementor-heading-title elementor-size-default\">Open Source, Modular, and Built for the Community<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-71376948 elementor-widget elementor-widget-text-editor\" data-id=\"71376948\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be3706ec\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t<p><span style=\"font-weight: 400;\">The qBOX is not just a finished product \u2014 it is part of the broader openUC2 ecosystem, an open-source optics platform developed in Jena, Germany. openUC2 provides 3D-printable, injection-moulded, and magnetic snap-together cube modules that can be combined like building blocks for optical science. The team\u2019s long-term vision is to make hands-on optical and quantum science education more affordable and more widely available.<\/span><\/p><p><span style=\"font-weight: 400;\">All firmware, hardware designs, build instructions, and experiment documentation are released as open source or planned for open release. The team is also expanding the library of experiments and inviting physics labs, educators, and makers worldwide to contribute new modules, educational content, and code. That means qBOX is not just something to buy and use \u2014 it is something the community can actively build upon.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-da59267 elementor-widget elementor-widget-heading\" data-id=\"da59267\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be370d0b\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span><h3 class=\"elementor-heading-title elementor-size-default\">Bring openUC2 qBOX to Life<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-da07da8 elementor-widget elementor-widget-text-editor\" data-id=\"da07da8\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be37137e\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t<p><span style=\"font-weight: 400;\">The openUC2 qBOX shows what can happen when modular optics meets compact embedded control. By combining open hardware, real experimental science, and the wireless convenience of the <\/span><a href=\"https:\/\/www.seeedstudio.com\/Seeed-XIAO-ESP32C3-p-5431.html?utm_source=Seeedblog\"><b>Seeed Studio XIAO ESP32-C3<\/b><\/a><span style=\"font-weight: 400;\">, the project makes quantum physics more tangible, interactive, and approachable for the next generation of learners and builders.<\/span><\/p><p><span style=\"font-weight: 400;\">Whether you are an educator looking for a more engaging way to teach optics, a student curious about quantum phenomena, or a maker eager to experiment beyond the breadboard, qBOX opens the door to real science in a remarkably compact format.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7fcc6e3 e-flex e-con-boxed e-con e-parent\" data-id=\"7fcc6e3\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-96d96a6 elementor-align-center elementor-widget elementor-widget-button\" data-id=\"96d96a6\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be372b1c\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"http:\/\/shop.openuc2.com\/shop\/kit-quantum-qmt-25-04-discovery-qbox-1424\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Get your qBOX today!<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c0b8bb1 elementor-align-center elementor-widget elementor-widget-button\" data-id=\"c0b8bb1\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be373209\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"http:\/\/docs.openuc2.com\/usage\/disc\/qbox\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Project Documentation<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e65af8f elementor-widget elementor-widget-spacer\" data-id=\"e65af8f\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be3738c6\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-40b10f1 elementor-widget elementor-widget-heading\" data-id=\"40b10f1\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be373ed6\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span><h3 class=\"elementor-heading-title elementor-size-default\">Reference<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3ec5f84 elementor-widget elementor-widget-text-editor\" data-id=\"3ec5f84\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be3745ec\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t<p><span style=\"font-weight: 400;\">For more background on the science and educational approach behind low-cost ODMR experiments with nitrogen-vacancy diamonds, check out:\u00a0<\/span><\/p><ul><li style=\"list-style-type: none;\"><ul><li><a href=\"https:\/\/link.springer.com\/article\/10.1140\/epjqt\/s40507-025-00326-5\"><span style=\"font-weight: 400;\">Haverkamp, N., Pusch, A., Gregor, M., et al. <\/span><b>Low-cost ODMR experiments with nitrogen-vacancy centers in diamonds: a didactical approach to theory and experiment.<\/b> <i><span style=\"font-weight: 400;\">EPJ Quantum Technology<\/span><\/i><span style=\"font-weight: 400;\"> 12, 27 (2025)<\/span><\/a><\/li><\/ul><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-46b49ce elementor-widget elementor-widget-spacer\" data-id=\"46b49ce\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll69e78be374bb0\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t<div class=\"elementor-element elementor-element-477bae4b e-flex e-con-boxed e-con e-parent\" data-id=\"477bae4b\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-53c8173 elementor-widget elementor-widget-heading\" data-id=\"53c8173\" data-element_type=\"widget\" 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The openUC2 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