{"id":139310,"date":"2022-05-13T18:23:10","date_gmt":"2022-05-13T23:23:10","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2022\/05\/a-step-forward-in-modern-quantum-technology-frequency-conversion-of-single-photons-at-arbitrary-wavelengths"},"modified":"2022-05-13T18:23:10","modified_gmt":"2022-05-13T23:23:10","slug":"a-step-forward-in-modern-quantum-technology-frequency-conversion-of-single-photons-at-arbitrary-wavelengths","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2022\/05\/a-step-forward-in-modern-quantum-technology-frequency-conversion-of-single-photons-at-arbitrary-wavelengths","title":{"rendered":"A step forward in modern quantum technology: Frequency conversion of single photons at arbitrary wavelengths"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/a-step-forward-in-modern-quantum-technology-frequency-conversion-of-single-photons-at-arbitrary-wavelengths2.jpg\"><\/a><\/p>\n<p>Quanta of light\u2014photons\u2014form the basis of quantum key distribution in modern cryptographic networks. Before the huge potential of quantum technology is fully realized, however, several challenges remain. A solution to one of these has now been found.<\/p>\n<p>In a paper published in the journal <i>Science<\/i>, teams led by David Novoa, Nicolas Joly and Philip Russell report a breakthrough in frequency up-conversion of single photons, based on a hollow-core photonic crystal fiber (PCF) filled with hydrogen gas. First a spatio-temporal hologram of molecular vibrations is created in the gas by stimulated Raman scattering. This hologram is then used for highly efficient, correlation-preserving frequency conversion of single photons. The system operates at a pressure-tuneable wavelength, making it potentially interesting for quantum communications, where efficient sources of indistinguishable single-photons are unavailable at wavelengths compatible with existing fiber networks.<\/p>\n<p>The approach combines <a href=\"https:\/\/phys.org\/tags\/quantum+optics\/\" rel=\"tag\" class=\"\">quantum optics<\/a>, gas-based <a href=\"https:\/\/phys.org\/tags\/nonlinear+optics\/\" rel=\"tag\" class=\"\">nonlinear optics<\/a>, hollow-core PCF, and the physics of molecular vibrations to form an efficient tool that can operate in any spectral band from the ultraviolet to the mid-infrared\u2014an ultra-broad working range inaccessible to existing technologies. The findings may be used to develop fiber-based tools in technologies such as <a href=\"https:\/\/phys.org\/tags\/quantum+communications\/\" rel=\"tag\" class=\"\">quantum communications<\/a>, and quantum-enhanced imaging.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Quanta of light\u2014photons\u2014form the basis of quantum key distribution in modern cryptographic networks. Before the huge potential of quantum technology is fully realized, however, several challenges remain. A solution to one of these has now been found. In a paper published in the journal Science, teams led by David Novoa, Nicolas Joly and Philip Russell [\u2026]<\/p>\n","protected":false},"author":661,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1923,1617],"tags":[],"class_list":["post-139310","post","type-post","status-publish","format-standard","hentry","category-holograms","category-quantum-physics"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/139310","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/661"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=139310"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/139310\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=139310"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=139310"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=139310"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}