{"id":3993,"date":"2024-08-17T12:51:55","date_gmt":"2024-08-17T10:51:55","guid":{"rendered":"https:\/\/equipes.lps.u-psud.fr\/ns2\/?p=3993"},"modified":"2024-08-17T12:59:06","modified_gmt":"2024-08-17T10:59:06","slug":"quantum-bath-engineering-of-a-high-impedance-microwave-mode-through-quasiparticle-tunneling-2","status":"publish","type":"post","link":"https:\/\/equipes.lps.u-psud.fr\/ns2\/quantum-bath-engineering-of-a-high-impedance-microwave-mode-through-quasiparticle-tunneling-2\/","title":{"rendered":"Efficient Microwave Photon-to-Electron Conversion in a High-Impedance Quantum Circuit"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">We demonstrate an efficient and continuous microwave photon-to-electron converter with large quantum efficiency (83%) and low dark current. These unique properties are enabled by the use of a high kinetic inductance disordered superconductor, granular aluminium, to enhance light-matter interaction and the coupling of microwave photons to electron tunneling processes. As a consequence of strong coupling, we observe both linear and nonlinear photon-assisted processes where two, three, and four photons are converted into a single electron at unprecedentedly low light intensities. Theoretical predictions, which require quantization of the photonic field within a quantum master equation framework, reproduce well the experimental data. This experimental advancement brings the foundation for high-efficiency detection of individual microwave photons using charge-based detection techniques.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">see the FOCUS made by Physical Review Letters here: <a href=\"https:\/\/physics.aps.org\/articles\/v17\/127\">https:\/\/physics.aps.org\/articles\/v17\/127<\/a><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"523\" src=\"https:\/\/equipes.lps.u-psud.fr\/ns2\/wp-content\/uploads\/sites\/16\/2024\/08\/e127_1.png\" alt=\"\" class=\"wp-image-3997\" srcset=\"https:\/\/equipes.lps.u-psud.fr\/ns2\/wp-content\/uploads\/sites\/16\/2024\/08\/e127_1.png 800w, https:\/\/equipes.lps.u-psud.fr\/ns2\/wp-content\/uploads\/sites\/16\/2024\/08\/e127_1-300x196.png 300w, https:\/\/equipes.lps.u-psud.fr\/ns2\/wp-content\/uploads\/sites\/16\/2024\/08\/e127_1-768x502.png 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Artistic illustration of the ideal microwave photon to electron conversion in our Granular Aluminium based quantum circuit.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Reference<\/strong><br><em>Efficient Microwave Photon-to-Electron Conversion in a High-Impedance Quantum Circuit<\/em><br>O. Stanisavljevi\u0107, J.-C. Philippe, J. Gabelli, M. Aprili, J. Est\u00e8ve, and J. Basset<br>Phys. Rev. Lett. <strong>133<\/strong>, 076302 (2024) Editor&rsquo;s suggestion and Featured in Physics<br>doi: <a href=\"https:\/\/doi.org\/10.1103\/PhysRevLett.133.076302\">https:\/\/doi.org\/10.1103\/PhysRevLett.133.076302<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Contact<\/strong><br>Julien Basset<\/p>\n","protected":false},"excerpt":{"rendered":"<p>We demonstrate an efficient and continuous microwave photon-to-electron converter with large quantum efficiency (83%) and low dark current. These unique properties are enabled by the use of a high kinetic &#8230;<\/p>\n","protected":false},"author":77,"featured_media":3997,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3993","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"_links":{"self":[{"href":"https:\/\/equipes.lps.u-psud.fr\/ns2\/wp-json\/wp\/v2\/posts\/3993","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/equipes.lps.u-psud.fr\/ns2\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/equipes.lps.u-psud.fr\/ns2\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/equipes.lps.u-psud.fr\/ns2\/wp-json\/wp\/v2\/users\/77"}],"replies":[{"embeddable":true,"href":"https:\/\/equipes.lps.u-psud.fr\/ns2\/wp-json\/wp\/v2\/comments?post=3993"}],"version-history":[{"count":5,"href":"https:\/\/equipes.lps.u-psud.fr\/ns2\/wp-json\/wp\/v2\/posts\/3993\/revisions"}],"predecessor-version":[{"id":4002,"href":"https:\/\/equipes.lps.u-psud.fr\/ns2\/wp-json\/wp\/v2\/posts\/3993\/revisions\/4002"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/equipes.lps.u-psud.fr\/ns2\/wp-json\/wp\/v2\/media\/3997"}],"wp:attachment":[{"href":"https:\/\/equipes.lps.u-psud.fr\/ns2\/wp-json\/wp\/v2\/media?parent=3993"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/equipes.lps.u-psud.fr\/ns2\/wp-json\/wp\/v2\/categories?post=3993"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/equipes.lps.u-psud.fr\/ns2\/wp-json\/wp\/v2\/tags?post=3993"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}