{"id":347921,"date":"2025-10-13T15:36:44","date_gmt":"2025-10-13T10:06:44","guid":{"rendered":"https:\/\/forumias.com\/blog\/?p=347921"},"modified":"2025-10-13T15:36:44","modified_gmt":"2025-10-13T10:06:44","slug":"quantum-random-number-generators-qrngs","status":"publish","type":"post","link":"https:\/\/forumias.com\/blog\/quantum-random-number-generators-qrngs\/","title":{"rendered":"Quantum Random Number Generators (QRNGs)"},"content":{"rendered":"<p><strong>News<\/strong><strong>: <\/strong>Indian researchers at RRI, used a general-purpose quantum computer to certify true random numbers, making real-life deployment feasible and strengthening digital security.<\/p>\n<h2>About Quantum Random Number Generators (QRNGs)<\/h2>\n<figure id=\"attachment_347922\" aria-describedby=\"caption-attachment-347922\" style=\"width: 393px\" class=\"wp-caption aligncenter\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\" wp-image-347922\" src=\"https:\/\/i0.wp.com\/forumias.com\/blog\/wp-content\/uploads\/2025\/10\/Source-ETV-Bharat.jpg?resize=393%2C220&#038;ssl=1\" alt=\"\" width=\"393\" height=\"220\" srcset=\"https:\/\/i0.wp.com\/forumias.com\/blog\/wp-content\/uploads\/2025\/10\/Source-ETV-Bharat.jpg?resize=300%2C168&amp;ssl=1 300w, https:\/\/i0.wp.com\/forumias.com\/blog\/wp-content\/uploads\/2025\/10\/Source-ETV-Bharat.jpg?resize=1024%2C573&amp;ssl=1 1024w, https:\/\/i0.wp.com\/forumias.com\/blog\/wp-content\/uploads\/2025\/10\/Source-ETV-Bharat.jpg?resize=768%2C430&amp;ssl=1 768w, https:\/\/i0.wp.com\/forumias.com\/blog\/wp-content\/uploads\/2025\/10\/Source-ETV-Bharat.jpg?resize=1536%2C860&amp;ssl=1 1536w, https:\/\/i0.wp.com\/forumias.com\/blog\/wp-content\/uploads\/2025\/10\/Source-ETV-Bharat.jpg?resize=1568%2C878&amp;ssl=1 1568w, https:\/\/i0.wp.com\/forumias.com\/blog\/wp-content\/uploads\/2025\/10\/Source-ETV-Bharat.jpg?w=1572&amp;ssl=1 1572w\" sizes=\"auto, (max-width: 393px) 100vw, 393px\" \/><figcaption id=\"caption-attachment-347922\" class=\"wp-caption-text\">Source &#8211; ETV Bharat<\/figcaption><\/figure>\n<ul>\n<li>QRNGs <strong>use quantum phenomena to generate truly random numbers <\/strong>for secure cryptographic keys and critical security applications.<\/li>\n<li><strong>Working Mechanism<\/strong>\n<ul>\n<li>QRNGs tap <strong>the built-in uncertainty of quantum mechanic<\/strong>s to provide a genuinely unpredictable source of randomness.<\/li>\n<li>They <strong>use a quantum entropy source<\/strong><strong>\u2014such as photon arrival times<\/strong>\u2014where each detection is an independent, random event.<\/li>\n<li>A <strong>photon-based source is used,<\/strong> where single photons pass through a beam splitter so that each path choice is intrinsically unpredictable.<\/li>\n<li>Detectors then <strong>record the outcomes and convert them into bits,<\/strong> <strong>creating a binary stream<\/strong> that reflects this inherent uncertainty.<\/li>\n<li>The <strong>bitstream is checked with stringent statistical tests to verify unpredictability<\/strong> and remove any bias introduced by the setup.<\/li>\n<li>By confirming that the numbers arise from <strong>quantum behavior rather than device artifacts<\/strong>, this method delivers <strong>authentic randomness<\/strong>, clearly setting QRNGs apart from classical generators.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Significance<\/strong><strong>: Certified true randomness can enable hack-proof digital security<\/strong> and strengthen the foundations of modern encryption systems.<\/li>\n<li><strong>Use of QRNGs<\/strong>\n<ul>\n<li><strong>Create robust encryption keys<\/strong> and improve secure communications and cryptographic protocols.<\/li>\n<li><strong>Protect passwords and authentication systems<\/strong> against prediction and pattern-based attacks.<\/li>\n<li><strong>Support scientific research, simulations, and modeling<\/strong> that require high-quality random inputs.<\/li>\n<li><strong>Enhance security architectures<\/strong> in noisy, real-world environments.<\/li>\n<\/ul>\n<\/li>\n<li><strong>India<\/strong><strong>\u2019<\/strong><strong>s Contributions<\/strong>\n<ul>\n<li><strong>Institution involved:<\/strong> This work was led by the team of physicists\u00a0at the <strong>Raman Research Institute, Bengaluru<\/strong>.<\/li>\n<li>Indian researchers <strong>advanced certified quantum randomness<\/strong> by addressing the <strong>device-certification problem<\/strong> and demonstrating techniques to generate truly random numbers.<\/li>\n<li>Earlier experiments worldwide relied on entanglement tests that violated <strong>Bell<\/strong><strong>\u2019<\/strong><strong>s Inequality<\/strong>, which typically required large spatial separation and were impractical for deployment.<\/li>\n<li>Adopting a different approach, the Indian team used <strong>time separation in a single particle<\/strong> and showed <strong>loophole-free violations of the Leggett<\/strong><strong>\u2013<\/strong><strong>Garg inequality (LGI)<\/strong> to certify intrinsic randomness.<\/li>\n<li>They then <strong>validated this certified-randomness method on a commercially available general-purpose quantum computer<\/strong> for real-world conditions.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>News: Indian researchers at RRI, used a general-purpose quantum computer to certify true random numbers, making real-life deployment feasible and strengthening digital security. About Quantum Random Number Generators (QRNGs) QRNGs use quantum phenomena to generate truly random numbers for secure cryptographic keys and critical security applications. Working Mechanism QRNGs tap the built-in uncertainty of quantum&hellip; <a class=\"more-link\" href=\"https:\/\/forumias.com\/blog\/quantum-random-number-generators-qrngs\/\">Continue reading <span class=\"screen-reader-text\">Quantum Random Number Generators (QRNGs)<\/span><\/a><\/p>\n","protected":false},"author":10393,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"footnotes":""},"categories":[1566,1738,12039],"tags":[11872],"class_list":["post-347921","post","type-post","status-publish","format-standard","hentry","category-daily-factly-articles","category-science-and-technology-daily-factly-articles","category-knolls","tag-9pm-daily-factly","entry"],"jetpack_featured_media_url":"","views":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts\/347921","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/users\/10393"}],"replies":[{"embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/comments?post=347921"}],"version-history":[{"count":0,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts\/347921\/revisions"}],"wp:attachment":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/media?parent=347921"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/categories?post=347921"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/tags?post=347921"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}