{"id":135571,"date":"2022-02-13T18:22:38","date_gmt":"2022-02-14T02:22:38","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2022\/02\/how-quantum-pairs-stitch-space-time"},"modified":"2022-02-13T18:22:38","modified_gmt":"2022-02-14T02:22:38","slug":"how-quantum-pairs-stitch-space-time","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2022\/02\/how-quantum-pairs-stitch-space-time","title":{"rendered":"How Quantum Pairs Stitch Space-Time"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/how-quantum-pairs-stitch-space-time.jpg\"><\/a><\/p>\n<p>Similarly, entanglement seems to be fundamental to the existence of space-time. This was the <a href=\"http:\/\/arxiv.org\/abs\/hep-th\/0605073\">conclusion<\/a> reached by a pair of postdocs in 2006: Shinsei Ryu (now at the University of Illinois, Urbana-Champaign) and Tadashi Takayanagi (now at Kyoto University), who shared the 2015 New Horizons in Physics prize for this work. \u201cThe idea was that the way that [the geometry of] space-time is encoded has a lot to do with how the different parts of this memory chip are entangled with each other,\u201d Van Raamsdonk explained.<\/p>\n<p>Inspired by their work, as well as by a subsequent paper of Maldacena\u2019s, in 2010 Van Raamsdonk proposed a thought experiment to demonstrate the critical role of entanglement in the formation of space-time, pondering what would happen if one cut the memory chip in two and then removed the entanglement between qubits in opposite halves. He found that space-time begins to tear itself apart, in much the same way that stretching a wad of gum by both ends yields a pinched-looking point in the center as the two halves move farther apart. Continuing to split that memory chip into smaller and smaller pieces unravels space-time until only tiny individual fragments remain that have no connection to one another. \u201cIf you take away the entanglement, your space-time just falls apart,\u201d said Van Raamsdonk. Similarly, \u201cif you wanted to build up a space-time, you\u2019d want to start entangling [qubits] together in particular ways.\u201d<\/p>\n<p>Combine those insights with Swingle\u2019s work connecting the entangled structure of space-time and the holographic principle to tensor networks, and another crucial piece of the puzzle snaps into place. <a href=\"http:\/\/arxiv.org\/abs\/1405.2933\">Curved space-times emerge quite naturally from entanglement<\/a> in tensor networks via holography. \u201cSpace-time is a geometrical representation of this quantum information,\u201d said Van Raamsdonk.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Similarly, entanglement seems to be fundamental to the existence of space-time. This was the conclusion reached by a pair of postdocs in 2006: Shinsei Ryu (now at the University of Illinois, Urbana-Champaign) and Tadashi Takayanagi (now at Kyoto University), who shared the 2015 New Horizons in Physics prize for this work. \u201cThe idea was that [\u2026]<\/p>\n","protected":false},"author":359,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1523,1617],"tags":[],"class_list":["post-135571","post","type-post","status-publish","format-standard","hentry","category-computing","category-quantum-physics"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/135571","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/359"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=135571"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/135571\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=135571"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=135571"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=135571"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}