메인메뉴바로가기

한양대학교 ERICA 산학협력단

홈으로 바로가기 > 연구정보 > 연구성과 > Recent Articles

연구성과 > Recent Articles

  • 한양대학교 기관으로 출판된 최신 SCI급 논문현황 (Web Of Science에서 제공되는 자료)
  • 매주 1회 업데이트
게시글

SCI Article

Optimal sequential state discrimination between two mixed quantum states
Author Namkung, Min (Dept Appl Phys); Kwon, Younghun (Dept Appl Phys);
Corresponding Author Info Namkung, M; Kwon, Y (reprint author), Hanyang Univ, Dept Appl Phys, Ansan 425791, Kyunggi Do, South Korea.
E-mail 메일mslab.nk@gmail.com 메일 yyhkwon@hanyang.ac.kr
Document Type Article
Source PHYSICAL REVIEW A Volume:96 Issue:2 Pages:- Published:2017
Times Cited 0
External Information pdfhttp://dx.doi.org/10.1103/PhysRevA.96.022318
Abstract Recently, sequential state discrimination, as a quantum-key distribution protocol, has been proposed for multiple receivers. A previous study [J. A. Bergou et al., Phys. Rev. Lett. 111, 100501 (2013)] showed that every receiver could successfully perform a sequential state discrimination of two pure states with identical prior probabilities. In this study, we extend the sequential state discrimination to mixed states with arbitrary prior probability. First, we analytically obtain the condition of the receiver's optimal measurement. In addition, we show that the optimal probability for every receiver to share the mixed state prepared by the sender is not zero. Furthermore, we compare the sequential state discrimination to the strategies of quantum reproducing and quantum broadcasting. We find that there are cases in which, unlike that of the pure state, the sequential state discrimination of mixed states shows a better performance than the other strategies.
Web of Science Categories Optics; Physics, Atomic, Molecular & Chemical
Funding Basic Science Research Program through the National Research Foundation of Korea - Ministry of Education, Science and Technology [NRF2015R1D1A1A01060795]; Institute for Information & communications Technology Promotion (IITP) - Korea government (MSIP) [R0
Language English
리스트