{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,4]],"date-time":"2025-11-04T11:11:15Z","timestamp":1762254675151},"reference-count":0,"publisher":"Rinton Press","issue":"11&12","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["QIC"],"abstract":"<jats:p>Six-state Quantum Key Distribution (QKD) achieves the highest key rate in the class of qubit-based QKD schemes. The standard security proof, which has been developed since 2005, invokes complicated theorems involving smooth R\\'{e}nyi entropies. In this paper we present a simpler security proof for 6-state QKD that entirely avoids R\\'{e}nyi entropies. This is achieved by applying state smoothing directly in the Bell basis. We obtain the well known asymptotic rate, but with slightly more favorable finite-size terms. We furthermore show that the same proof technique can be used for 6-state quantum key recycling.<\/jats:p>","DOI":"10.26421\/qic23.11-12-4","type":"journal-article","created":{"date-parts":[[2023,9,14]],"date-time":"2023-09-14T19:42:40Z","timestamp":1694720560000},"page":"949-960","source":"Crossref","is-referenced-by-count":1,"title":["A simpler security proof for 6-state quantum key distribution"],"prefix":"10.26421","volume":"23","author":[{"given":"Kaan","family":"Akyuz","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Boris","family":"Skoric","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"10955","published-online":{"date-parts":[[2023,9]]},"container-title":["Quantum Information and Computation"],"original-title":[],"deposited":{"date-parts":[[2023,9,14]],"date-time":"2023-09-14T19:42:45Z","timestamp":1694720565000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.rintonpress.com\/journals\/doi\/QIC23.11-12-4.html"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,9]]},"references-count":0,"journal-issue":{"issue":"11&12","published-online":{"date-parts":[[2023,9]]}},"URL":"https:\/\/doi.org\/10.26421\/qic23.11-12-4","relation":{},"ISSN":["1533-7146"],"issn-type":[{"value":"1533-7146","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,9]]}}}