{"id":2513,"date":"2022-02-01T16:08:56","date_gmt":"2022-02-01T16:08:56","guid":{"rendered":"http:\/\/www.astri.inaf.it\/?p=2513"},"modified":"2025-05-22T08:05:13","modified_gmt":"2025-05-22T08:05:13","slug":"one-photon-two-photons","status":"publish","type":"post","link":"https:\/\/www.astri.inaf.it\/index.php\/one-photon-two-photons\/2022\/?lang=en","title":{"rendered":"One photon, two photons &#8230;"},"content":{"rendered":"<p>A new observational technique to identify the finest details of celestial sources: after long nights of experiments, stellar intensity interferometry has given its first results.<\/p>\n<p>With a base between the two telescopes on the Asiago plateau of almost 4 kilometers, Luca Zampieri and collaborators target the brightest stars with instruments capable of counting single optical photons and of tagging their arrival time with the precision of the order of a few hundred picoseconds (one ten-billionth of a second).<\/p>\n<p>If applied to ASTRI Mini-Array, this technique could give even more spectacular results.<\/p>\n<div id=\"attachment_2268\" style=\"width: 1040px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-2268\" class=\"wp-image-2268 size-large\" src=\"https:\/\/www.astri.inaf.it\/wp-content\/uploads\/2021\/07\/MappaAsiago_hi-1030x623.jpg\" alt=\"Asiago upland: the telescopes used in the experiment\" width=\"1030\" height=\"623\" \/><p id=\"caption-attachment-2268\" class=\"wp-caption-text\">Asiago upland: the telescopes used in the experiment<\/p><\/div>\n<p>&nbsp;<\/p>\n<p>Read the details both in the article published by the\u00a0<i>Monthly Notices of the Royal Astronomical Society:<\/i> &#8220;Stellar intensity interferometry of Vega in photon counting mode&#8221;, by Luca Zampieri, Giampiero Naletto, Aleksandr Burtovoi, Michele Fiori and Cesare Barbieri and in the in-depth study published by MediaINAF.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A new observational technique to identify the finest details of celestial sources: after long nights of experiments, stellar intensity interferometry has given its first results. With a base between the two telescopes on the Asiago plateau of almost 4 kilometers, Luca Zampieri and collaborators target the brightest stars with instruments capable of counting single optical [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":3551,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[55],"tags":[],"class_list":["post-2513","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news-en"],"_links":{"self":[{"href":"https:\/\/www.astri.inaf.it\/index.php\/wp-json\/wp\/v2\/posts\/2513","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.astri.inaf.it\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.astri.inaf.it\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.astri.inaf.it\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.astri.inaf.it\/index.php\/wp-json\/wp\/v2\/comments?post=2513"}],"version-history":[{"count":1,"href":"https:\/\/www.astri.inaf.it\/index.php\/wp-json\/wp\/v2\/posts\/2513\/revisions"}],"predecessor-version":[{"id":3773,"href":"https:\/\/www.astri.inaf.it\/index.php\/wp-json\/wp\/v2\/posts\/2513\/revisions\/3773"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.astri.inaf.it\/index.php\/wp-json\/wp\/v2\/media\/3551"}],"wp:attachment":[{"href":"https:\/\/www.astri.inaf.it\/index.php\/wp-json\/wp\/v2\/media?parent=2513"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.astri.inaf.it\/index.php\/wp-json\/wp\/v2\/categories?post=2513"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.astri.inaf.it\/index.php\/wp-json\/wp\/v2\/tags?post=2513"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}