ETRI-Knowledge Sharing Plaform

ENGLISH

성과물

논문 검색
구분 SCI
연도 ~ 키워드

상세정보

학술지 Monogamy Equality in 2x2xd Quantum Systems
Cited 8 time in scopus Download 0 time Share share facebook twitter linkedin kakaostory
저자
지동표, 최정운, 정갑균, 김정산, 김태완, 이수준
발행일
200811
출처
Journal of Mathematical Physics, v.49 no.11, pp.1-4
ISSN
0022-2488
출판사
American Institute of Physics(AIP)
DOI
https://dx.doi.org/10.1063/1.3020685
협약과제
08MK1100, 차세대 시큐리티 기술 개발, 조현숙
초록
There is an interesting property about multipartite entanglement, called the monogamy of entanglement. The property can be shown by the monogamy inequality, called the Coffman-Kundu-Wootters inequality [Phys. Rev. A 61, 052306 (2000); Coffman-Kundu-WoottersPhys. Rev. Lett. 96, 220503 (2006)], and more explicitly by the monogamy equality in terms of the concurrence and the concurrence of assistance, C2A(BC) = C2AB + (CACa) 2, in the three-qubit system. In this paper, we consider the monogamy equality in 2?뒚2?뒚d quantum systems. We show that CA(BC) = CAB if and only if C ACa =0 and also show that if CA(BC) = C ACa, then CAB =0, while there exists a state in a 2?뒚2?뒚d system such that CAB =0 but CA(BC) > CAC3a. © 2008 American Institute of Physics.
KSP 제안 키워드
Multipartite entanglement, Quantum system