{"id":211175,"date":"2026-03-30T09:00:00","date_gmt":"2026-03-30T13:00:00","guid":{"rendered":"https:\/\/inrs.ca\/?p=211175"},"modified":"2026-03-30T09:36:16","modified_gmt":"2026-03-30T13:36:16","slug":"finding-the-quantum-needle-in-a-haystack","status":"publish","type":"post","link":"https:\/\/inrs.ca\/en\/news\/finding-the-quantum-needle-in-a-haystack\/","title":{"rendered":"Finding the \u201cQuantum Needle\u201d in a Haystack"},"content":{"rendered":"\n<p class=\"has-large-font-size wp-block-paragraph\"><strong><strong>A research team at INRS develops a simple, energy\u2011efficient method to isolate the right photons\u2014along with their quantum properties.<\/strong><\/strong><\/p>\n\n\n    \n<div class=\"wp-block full-width-image \">\n    <div class=\"image-ctn\">\n        <img decoding=\"async\" src=\"https:\/\/inrs.ca\/wp-content\/uploads\/Jose-Azana_Benjamin-Crockett-web.jpg\" alt=\"\u00c9quipe du professeur\u00a0Jos\u00e9\u00a0Aza\u00f1a\" \/>\n    <\/div>\n    <p>Professor Jos\u00e9 Aza\u00f1a and Benjamin Crockett.<\/p>\n<\/div>\n\n\n<p class=\"has-drop-cap wp-block-paragraph\">In quantum technologies, everything depends on the ability to detect the properties carried by a single photon. But in the real world, that photon of interest is often buried in a sea of unwanted light \u2014 a true \u201cneedle in a haystack\u201d challenge that currently limits the deployment of many applications, including secure quantum communication, quantum sensors used in telescope networks, as well as the interconnection of quantum computers to accelerate the development of new drugs and materials.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">At the Institut national de la recherche scientifique (INRS), the team of Professor <a href=\"https:\/\/inrs.ca\/en\/research\/professors\/jose-azana\/\">Jos\u00e9 Aza\u00f1a<\/a>, in collaboration with Professor <a href=\"https:\/\/inrs.ca\/en\/research\/professors\/roberto-morandotti\/\">Roberto Morandotti<\/a>\u2019s group, has developed a surprisingly simple and energy\u2011efficient way to overcome this obstacle. The work was carried out by Benjamin Crockett during his PhD at the <a href=\"https:\/\/inrs.ca\/centres\/linrs\/centres-recherche\/centre-energie-materiaux-telecommunications\/\">INRS \u00c9nergie Mat\u00e9riaux T\u00e9l\u00e9communications Research Centre<\/a>. He recently completed his degree and is now a Banting postdoctoral fellow at the University of British Columbia (UBC).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Their method not only reduces noise but, more importantly, recovers essential quantum properties that would otherwise be lost in bright environments where current technologies fail.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u201cWith this new methodology, we were able to recover quantum states corrupted by large amounts of noise\u2014states that would otherwise have been lost. This could allow quantum systems to operate under real\u2011world noise conditions, helping overcome one of the major barriers to the practical deployment of quantum technologies.\u201d<\/p>\n<cite><strong>Benjamin Crockett<\/strong>, lead author of the study and INRS graduate<\/cite><\/blockquote>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;6a97d8da264c2&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"6a97d8da264c2\" class=\"wp-block-image size-large wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"537\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/inrs.ca\/wp-content\/uploads\/Robin-Helsten_Benjamin-Crockett_Yang-Liu_Nicola-Montaut-web2-1024x537.jpg\" alt=\"\" class=\"wp-image-211181\" srcset=\"https:\/\/inrs.ca\/wp-content\/uploads\/Robin-Helsten_Benjamin-Crockett_Yang-Liu_Nicola-Montaut-web2-1024x537.jpg 1024w, https:\/\/inrs.ca\/wp-content\/uploads\/Robin-Helsten_Benjamin-Crockett_Yang-Liu_Nicola-Montaut-web2-300x157.jpg 300w, https:\/\/inrs.ca\/wp-content\/uploads\/Robin-Helsten_Benjamin-Crockett_Yang-Liu_Nicola-Montaut-web2-768x403.jpg 768w, https:\/\/inrs.ca\/wp-content\/uploads\/Robin-Helsten_Benjamin-Crockett_Yang-Liu_Nicola-Montaut-web2.jpg 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\tdata-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.thisImage.buttonRight\"\n\t\t\tdata-wp-style--top=\"state.thisImage.buttonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><figcaption class=\"wp-element-caption\">From left to right : Robin Helsten, Benjamin Crockett, Yang Liu, and Nicola Montaut, coauthors of the study in the laboratory of Professor Jos\u00e9 Aza\u00f1a<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The&nbsp;team\u2019s&nbsp;findings&nbsp;were&nbsp;published&nbsp;in&nbsp;<a href=\"https:\/\/www.science.org\/doi\/full\/10.1126\/sciadv.ady8981\" target=\"_blank\" rel=\"noreferrer noopener\">Science Advances<\/a>.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-recovering-nbsp-hidden-nbsp-quantum-information-nbsp\">Recovering&nbsp;Hidden&nbsp;Quantum Information&nbsp;<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">By repurposing a classical optical device \u2014 the Talbot Array Illuminator (TAI) \u2014 the researchers succeeded in reorganizing light in time to highlight the useful photons without destructive amplification. The method works for individual photons as well as for time\u2011entangled photon pairs, a key resource for quantum communication. It can even reveal non\u2011classical quantum signatures that normally remain invisible in bright environments.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">One of the study\u2019s key insights, explains Benjamin Crockett, is that we can manipulate quantum correlations between photons in much the same way we process images.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Imagine you have an image corrupted by noise (as shown in A of the figure). To make it readable, you can pass it through a series of lenses. These lenses redistribute the image: instead of a blurry, noisy picture, it becomes a set of bright, well\u2011defined points. This transformation makes it easier to ignore the noise and extract the meaningful information.<\/p>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;6a97d8da2693a&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"6a97d8da2693a\" class=\"wp-block-image size-large wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"588\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/inrs.ca\/wp-content\/uploads\/image-1-1024x588.jpg\" alt=\"\" class=\"wp-image-211167\" srcset=\"https:\/\/inrs.ca\/wp-content\/uploads\/image-1-1024x588.jpg 1024w, https:\/\/inrs.ca\/wp-content\/uploads\/image-1-300x172.jpg 300w, https:\/\/inrs.ca\/wp-content\/uploads\/image-1-768x441.jpg 768w, https:\/\/inrs.ca\/wp-content\/uploads\/image-1-1536x883.jpg 1536w, https:\/\/inrs.ca\/wp-content\/uploads\/image-1.jpg 1660w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\tdata-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.thisImage.buttonRight\"\n\t\t\tdata-wp-style--top=\"state.thisImage.buttonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><figcaption class=\"wp-element-caption\"><strong>Cr\u00e9dit : <\/strong>Jos\u00e9&nbsp;Aza\u00f1a&#8217;s Team<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">This principle can be applied in time as well.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Just as we process a spatial image with optical elements, we can use a temporal equivalent of this imaging system to reorganize photon correlations over time. The correlations are redistributed into a series of distinct temporal points, making them much easier to analyze despite noise.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u201cSeeing quantum properties emerge in a bright environment, without complex processing steps, was one of the most striking results.\u201d<\/p>\n<cite><strong>Jos\u00e9 Aza\u00f1a<\/strong>, Professor at INRS who specializes in ultrafast photonics<\/cite><\/blockquote>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-next-steps\">Next Steps<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The&nbsp;next&nbsp;phase for the&nbsp;team&nbsp;at INRS&nbsp;is&nbsp;to&nbsp;integrate&nbsp;this&nbsp;method&nbsp;directly&nbsp;onto a chip, to test&nbsp;it&nbsp;in&nbsp;optical&nbsp;fibers&nbsp;and free\u2011space&nbsp;channels, and to combine&nbsp;it&nbsp;with&nbsp;other&nbsp;techniques to&nbsp;improve&nbsp;the range and&nbsp;reliability&nbsp;of future quantum links.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>This&nbsp;work&nbsp;was&nbsp;made possible&nbsp;thanks&nbsp;to&nbsp;funding&nbsp;from&nbsp;the Natural Sciences and Engineering&nbsp;Research&nbsp;Council of Canada (NSERC) and the Fonds de recherche du Qu\u00e9bec \u2013 Nature et technologies (FRQNT).&nbsp;<\/strong><\/p>\n\n\n\n<div class=\"wp-block-columns has-grey-background-color has-background is-layout-flex wp-container-core-columns-is-layout-cb824253 wp-block-columns-is-layout-flex\" style=\"margin-top:var(--wp--preset--spacing--40);margin-bottom:var(--wp--preset--spacing--40);padding-top:var(--wp--preset--spacing--40);padding-right:var(--wp--preset--spacing--40);padding-bottom:var(--wp--preset--spacing--40);padding-left:var(--wp--preset--spacing--40)\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Benjamin Crockett distinguished himself at INRS with several major international honors. He became the first scientist from a Canadian university to win the <a href=\"https:\/\/inrs.ca\/en\/news\/tingye-li-innovation-prize-awarded-to-doctoral-student-benjamin-crockett\/\">Tingye\u202fLi Innovation Award<\/a> at the OFC conference, a key milestone in optics and communications. He also received SPIE\u2019s top distinction, the <a href=\"https:\/\/inrs.ca\/en\/news\/two-students-receive-prestigious-international-scholarships\/\">D.J.\u202fLovell Scholarship<\/a>, along with additional recognition from Optica and the IEEE Photonics Society, underscoring the impact of his work in quantum technologies.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>A research team at INRS develops a simple, energy\u2011efficient method to isolate the right photons\u2014along with their quantum properties.<\/p>\n","protected":false},"author":4,"featured_media":211179,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[688],"tags":[],"sectors":[],"class_list":["post-211175","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-innover-a-linrs-en"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.1 (Yoast SEO v28.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Finding the \u201cQuantum Needle\u201d in a Haystack | INRS<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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