Our research project is focused on the development of a single photon source based on third order non-linearity in a cell of 87 Rubidium atoms through Four-Wave-Mixing process (FWM). In this process, a pair of co-propagating beams, a pump and a coupling, interact with the atomic ensemble and generate Stokes and anti-Stokes photon pairs. To fully characterize the spontaneous FWM at the single photon level, a homodyne detection scheme will be implemented. The heralded signal (anti-Stokes) photon will be mixed with a local oscillator and measured only when a single-photon detector, acting as a trigger, will have detected the idler (Stokes) photon. Within this context, we aim at engineering the generation of heralded single photons frequency-entangled states, exploiting the indistinguishability between two FWM processes under suitable pump and coupling driving conditions [1]. The frequency bandwidth of the generated photons makes them ideal to interact with systems like atoms and molecules. A first experimental test will be implemented adapting the entangled source to interact with our atomic system made by a Bose-Einstein condensate of 87 Rubidium realized with an atom-chip (see Figure) thus paving the way towards the long-standing goal of a quantum network of atomic clocks. (Image created by I. Mastroserio)<\/p>\n\n\n\n
References<\/p>\n\n\n\n
[1] A. Zavatta, M. Artoni, and G. La Rocca, Engineering of heralded narrowband color-entangled states. Phys. Rev. A 99, 031802(R) (2019).<\/p>\n","protected":false},"excerpt":{"rendered":"
Our research project is focused on the development of a single photon source based on third order non-linearity in a cell of 87 Rubidium atoms through Four-Wave-Mixing process (FWM). In this process, a pair of co-propagating beams, a pump and a coupling, interact with the atomic ensemble and generate Stokes and anti-Stokes photon pairs. To […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-37","post","type-post","status-publish","format-standard","hentry","category-non-classe"],"_links":{"self":[{"href":"https:\/\/quantaquest-padr.eu\/index.php\/wp-json\/wp\/v2\/posts\/37","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/quantaquest-padr.eu\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/quantaquest-padr.eu\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/quantaquest-padr.eu\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/quantaquest-padr.eu\/index.php\/wp-json\/wp\/v2\/comments?post=37"}],"version-history":[{"count":1,"href":"https:\/\/quantaquest-padr.eu\/index.php\/wp-json\/wp\/v2\/posts\/37\/revisions"}],"predecessor-version":[{"id":38,"href":"https:\/\/quantaquest-padr.eu\/index.php\/wp-json\/wp\/v2\/posts\/37\/revisions\/38"}],"wp:attachment":[{"href":"https:\/\/quantaquest-padr.eu\/index.php\/wp-json\/wp\/v2\/media?parent=37"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/quantaquest-padr.eu\/index.php\/wp-json\/wp\/v2\/categories?post=37"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/quantaquest-padr.eu\/index.php\/wp-json\/wp\/v2\/tags?post=37"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}