{"id":4797,"date":"2011-01-01T00:00:00","date_gmt":"2011-01-01T08:00:00","guid":{"rendered":"https:\/\/wpdev.hmc.edu\/physics\/2011\/01\/01\/entanglement-secured-single-qubit-quantum-secret-sharing\/"},"modified":"2011-01-01T00:00:00","modified_gmt":"2011-01-01T08:00:00","slug":"entanglement-secured-single-qubit-quantum-secret-sharing","status":"publish","type":"physics_publications","link":"https:\/\/www.hmc.edu\/physics\/research\/publications\/entanglement-secured-single-qubit-quantum-secret-sharing\/","title":{"rendered":"Entanglement-secured single-qubit quantum secret sharing"},"content":{"rendered":"\n<p id=\"authors\"><span class=\"studauthor\">David A. Berryrieser<\/span>, <span class=\"studauthor\">Peter J. Scherpelz<\/span>, <span class=\"studauthor\">Rudolph W. Resch<\/span>, and <span class=\"facauthor\">Theresa W. Lynn<\/span><\/p>\n\n\n\n<p id=\"doc-link\"><a href=\"https:\/\/www.hmc.edu\/physics\/wp-content\/uploads\/sites\/22\/2023\/02\/\">Entanglement-secured single-qubit quantum secret sharing (PDF)<\/a><\/p>\n\n\n\n<p id=\"journal\"><span class=\"journal-title\">Physical Review A<\/span> <strong data-vol=\"84\">84<\/strong> <span id=\"journal-year\">(2011)<\/span> <span id=\"journal-pages\" data-pages=\"32303\">32303<\/span><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Abstract<\/h2>\n\n\n\n<p>In single-qubit quantum secret sharing, a secret is shared between *N* parties via manipulation and measurement of one qubit at a time. Each qubit is sent to all *N* parties in sequence; the secret is encoded in the first participant\u2019s preparation of the qubit state and the subsequent participants\u2019 choices of state rotation or measurement basis. We present a protocol for single-qubit quantum secret sharing using polarization entanglement of photon pairs produced in type-I spontaneous parametric downconversion. We investigate the protocol\u2019s security against eavesdropping attack under common experimental conditions: a lossy channel for photon transmission, and imperfect preparation of the initial qubit state. A protocol which exploits *entanglement* between photons, rather than simply polarization *correlation*, is more robustly secure. We implement the entanglement-based secret-sharing protocol with 87% secret-sharing fidelity, limited by the purity of the entangled state produced by our present apparatus. We demonstrate a photon-number splitting eavesdropping attack, which achieves no success against the entanglement-based protocol while showing the predicted rate of success against a correlation-based protocol.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>David A. Berryrieser, Peter J. Scherpelz, Rudolph W. Resch, and Theresa W. Lynn Entanglement-secured single-qubit quantum secret sharing (PDF) Physical [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"template":"","publication_author":[20],"class_list":["post-4797","physics_publications","type-physics_publications","status-publish","hentry","publication_author-lynn"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.hmc.edu\/physics\/wp-json\/wp\/v2\/physics_publications\/4797","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hmc.edu\/physics\/wp-json\/wp\/v2\/physics_publications"}],"about":[{"href":"https:\/\/www.hmc.edu\/physics\/wp-json\/wp\/v2\/types\/physics_publications"}],"author":[{"embeddable":true,"href":"https:\/\/www.hmc.edu\/physics\/wp-json\/wp\/v2\/users\/1"}],"wp:attachment":[{"href":"https:\/\/www.hmc.edu\/physics\/wp-json\/wp\/v2\/media?parent=4797"}],"wp:term":[{"taxonomy":"publication_author","embeddable":true,"href":"https:\/\/www.hmc.edu\/physics\/wp-json\/wp\/v2\/publication_author?post=4797"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}