{"id":856,"date":"2005-03-07T10:09:14","date_gmt":"2005-03-07T17:09:14","guid":{"rendered":"http:\/\/dabacon.org\/pontiff\/?p=856"},"modified":"2005-03-07T10:09:14","modified_gmt":"2005-03-07T17:09:14","slug":"optimality-feels-good","status":"publish","type":"post","link":"https:\/\/dabacon.org\/pontiff\/2005\/03\/07\/optimality-feels-good\/","title":{"rendered":"Optimality Feels Good"},"content":{"rendered":"<p>New paper!  New paper!  Let&#8217;s all do the new paper dance.  Posted to the arxiv today: <a href=\"http:\/\/arxiv.org\/abs\/quant-ph\/0503047\">quant-ph 0503047<\/a>.  This paper is a revision of an earlier paper, where now it is shown that the protocol in the earlier paper is in fact optimal.<br \/>\n<b>Optimal classical-communication-assisted local model of n-qubit Greenberger-Horne-Zeilinger correlations<\/b><br \/>\n<b>Authors:<\/b> <a href=\"http:\/\/arxiv.org\/find\/quant-ph\/1\/au:+Tessier_T\/0\/1\/0\/all\/0\/1\">Tracey E. Tessier<\/a>,  <a href=\"http:\/\/arxiv.org\/find\/quant-ph\/1\/au:+Caves_C\/0\/1\/0\/all\/0\/1\">Carlton M. Caves<\/a>,  <a href=\"http:\/\/arxiv.org\/find\/quant-ph\/1\/au:+Deutsch_I\/0\/1\/0\/all\/0\/1\">Ivan H. Deutsch<\/a>,  <a href=\"http:\/\/arxiv.org\/find\/quant-ph\/1\/au:+Bacon_D\/0\/1\/0\/all\/0\/1\">Dave Bacon<\/a>, <a href=\"http:\/\/arxiv.org\/find\/quant-ph\/1\/au:+Eastin_B\/0\/1\/0\/all\/0\/1\">Bryan Eastin<\/a><br \/>\n<b>Comments:<\/b> This submission supersedes <a HREF=\"http:\/\/arxiv.org\/abs\/quant-ph\/0407133\">quant-ph\/0407133<\/a>. It is a substantially revised version of the previous document and now includes an optimality proof of our model<\/p>\n<blockquote><p>\nWe present a model, motivated by the criterion of reality put forward by Einstein, Podolsky, and Rosen and supplemented by classical communication, which correctly reproduces the quantum-mechanical predictions for measurements of all products of Pauli operators on an n-qubit GHZ state (or &quot;cat state&quot;). The n-2 bits employed by our model is shown to be optimal for the allowed set of measurements, demonstrating that the required communication overhead scales linearly with n. We formulate a connection between the generation of the local values utilized by our model and the stabilizer formalism, which leads us to conjecture that a generalization of this method will shed light on the content of the Gottesman-Knill theorem.\n<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>New paper! New paper! Let&#8217;s all do the new paper dance. Posted to the arxiv today: quant-ph 0503047. This paper is a revision of an earlier paper, where now it is shown that the protocol in the earlier paper is in fact optimal. Optimal classical-communication-assisted local model of n-qubit Greenberger-Horne-Zeilinger correlations Authors: Tracey E. Tessier, &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/dabacon.org\/pontiff\/2005\/03\/07\/optimality-feels-good\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Optimality Feels Good&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[20,63,76],"tags":[],"class_list":["post-856","post","type-post","status-publish","format-standard","hentry","category-computer-science","category-quantum","category-self-meet-center-center-meet-self"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/dabacon.org\/pontiff\/wp-json\/wp\/v2\/posts\/856","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dabacon.org\/pontiff\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dabacon.org\/pontiff\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dabacon.org\/pontiff\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dabacon.org\/pontiff\/wp-json\/wp\/v2\/comments?post=856"}],"version-history":[{"count":0,"href":"https:\/\/dabacon.org\/pontiff\/wp-json\/wp\/v2\/posts\/856\/revisions"}],"wp:attachment":[{"href":"https:\/\/dabacon.org\/pontiff\/wp-json\/wp\/v2\/media?parent=856"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dabacon.org\/pontiff\/wp-json\/wp\/v2\/categories?post=856"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dabacon.org\/pontiff\/wp-json\/wp\/v2\/tags?post=856"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}