{"id":4664,"date":"2023-07-24T13:26:45","date_gmt":"2023-07-24T07:56:45","guid":{"rendered":"https:\/\/www.isical.ac.in\/~pamu\/?post_type=event&#038;p=4664"},"modified":"2023-08-22T14:12:15","modified_gmt":"2023-08-22T08:42:15","slug":"how-good-is-quantum-communication","status":"publish","type":"event","link":"https:\/\/oldweb.isical.ac.in\/~pamu\/event\/how-good-is-quantum-communication\/","title":{"rendered":"How good is quantum communication?"},"content":{"rendered":"<p><span class=\"WdYUQQ text-decoration-none text-strikethrough-none\">Despite having infinite pure preparations quantum communication can not overpower its classical counterpart, in question of input-independent decoding at receiver&#8217;s end. This result was first established by A. S. Holevo, considering mutual information as a quantifier of communication utility. Here, exploring a general quantification for the (input-independent) communication scenario, we will introduce a task which can be accomplished perfectly by communicating a two-level quantum system. However, a perfect classical bit, even with infinite dimensional shared randomness is unable to do so. Further, considering the presence of noise in the communication line, we establish that a quantum channel can not always be replaced by a classical channel of identical communication capacity.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Despite having infinite pure preparations quantum communication can not overpower its classical counterpart, in question of input-independent decoding at receiver&#8217;s end. This result was first established by A. S. Holevo, considering mutual information as a quantifier of communication utility&#8230;<\/p>\n","protected":false},"featured_media":4690,"template":"","categories":[107],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/oldweb.isical.ac.in\/~pamu\/wp-json\/wp\/v2\/event\/4664"}],"collection":[{"href":"https:\/\/oldweb.isical.ac.in\/~pamu\/wp-json\/wp\/v2\/event"}],"about":[{"href":"https:\/\/oldweb.isical.ac.in\/~pamu\/wp-json\/wp\/v2\/types\/event"}],"version-history":[{"count":1,"href":"https:\/\/oldweb.isical.ac.in\/~pamu\/wp-json\/wp\/v2\/event\/4664\/revisions"}],"predecessor-version":[{"id":4826,"href":"https:\/\/oldweb.isical.ac.in\/~pamu\/wp-json\/wp\/v2\/event\/4664\/revisions\/4826"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oldweb.isical.ac.in\/~pamu\/wp-json\/wp\/v2\/media\/4690"}],"wp:attachment":[{"href":"https:\/\/oldweb.isical.ac.in\/~pamu\/wp-json\/wp\/v2\/media?parent=4664"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/oldweb.isical.ac.in\/~pamu\/wp-json\/wp\/v2\/categories?post=4664"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/oldweb.isical.ac.in\/~pamu\/wp-json\/wp\/v2\/tags?post=4664"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}