{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T04:18:51Z","timestamp":1760242731736,"version":"build-2065373602"},"reference-count":19,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2016,5,3]],"date-time":"2016-05-03T00:00:00Z","timestamp":1462233600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"NSFC","doi-asserted-by":"publisher","award":["61402058","61572086"],"award-info":[{"award-number":["61402058","61572086"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"the Fund for Middle and Young Academic Leaders of CUIT","award":["J201511"],"award-info":[{"award-number":["J201511"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Entropy"],"abstract":"<jats:p>We propose a loss tolerant quantum private query (QPQ) protocol based on two non-orthogonal states and unambiguous state discrimination (USD) measurement. By analyzing a two-point attack by a third party, we find that our protocol has a stronger ability to resist external attacks than G-protocol and Y-protocol. Our protocol requires a smaller number of compressions than that in G-protocol (Gao et al., Opt. Exp. 2012, 20, 17411\u201317420) and Y-protocol (Yan et al. Quant. Inf. Process. 2014, 13, 805\u2013813), which means less post-processing. Our protocol shows better database security and user privacy compared with G-protocol.<\/jats:p>","DOI":"10.3390\/e18050163","type":"journal-article","created":{"date-parts":[[2016,5,3]],"date-time":"2016-05-03T10:12:55Z","timestamp":1462270375000},"page":"163","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Quantum Private Query Protocol Based on Two Non-Orthogonal States"],"prefix":"10.3390","volume":"18","author":[{"given":"Yan","family":"Chang","sequence":"first","affiliation":[{"name":"College of Information Security Engineering, Chengdu University of Information Technology, Chengdu 610225, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shibin","family":"Zhang","sequence":"additional","affiliation":[{"name":"College of Information Security Engineering, Chengdu University of Information Technology, Chengdu 610225, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Guihua","family":"Han","sequence":"additional","affiliation":[{"name":"College of Information Security Engineering, Chengdu University of Information Technology, Chengdu 610225, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhiwei","family":"Sheng","sequence":"additional","affiliation":[{"name":"College of Information Security Engineering, Chengdu University of Information Technology, Chengdu 610225, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lili","family":"Yan","sequence":"additional","affiliation":[{"name":"College of Information Security Engineering, Chengdu University of Information Technology, Chengdu 610225, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jinxin","family":"Xiong","sequence":"additional","affiliation":[{"name":"College of Information Security Engineering, Chengdu University of Information Technology, Chengdu 610225, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2016,5,3]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"965","DOI":"10.1145\/293347.293350","article-title":"Private Information Retrieval","volume":"45","author":"Chor","year":"1998","journal-title":"J. ACM"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"592","DOI":"10.1006\/jcss.1999.1689","article-title":"Protecting data privacy in private information retrieval schemes","volume":"60","author":"Gertner","year":"2000","journal-title":"J. Comput. Syst. Sci."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"1154","DOI":"10.1103\/PhysRevA.56.1154","article-title":"Insecurity of quantum secure","volume":"56","author":"Lo","year":"1997","journal-title":"Phys. Rev. A"},{"key":"ref_4","first-page":"351","article-title":"Practical quantum oblivious transfer","volume":"576","author":"Bennett","year":"1992","journal-title":"Adv. Cryptol."},{"key":"ref_5","unstructured":"Brassard, G., Crepeau, C., Jozsa, R., and Langlois, D. (1993, January 3\u20135). A quantum bit commitment scheme provably unbreakable by both parties. 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The Theory of Error-Correcting Codes, North-Holland Publishing Company."}],"container-title":["Entropy"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1099-4300\/18\/5\/163\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T19:23:12Z","timestamp":1760210592000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1099-4300\/18\/5\/163"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2016,5,3]]},"references-count":19,"journal-issue":{"issue":"5","published-online":{"date-parts":[[2016,5]]}},"alternative-id":["e18050163"],"URL":"https:\/\/doi.org\/10.3390\/e18050163","relation":{},"ISSN":["1099-4300"],"issn-type":[{"type":"electronic","value":"1099-4300"}],"subject":[],"published":{"date-parts":[[2016,5,3]]}}}