Open AccessControlled implementation of a nonlocal and open-target destination quantum controlled-Not （CNOT） gate using partially entangled pairs
Author(s) -
陈立冰,
Tan Peng,
董少光,
路洪
Publication year - 2009
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.58.6772
Subject(s) - controlled not gate , povm , physics , scheme (mathematics) , topology (electrical circuits) , operator (biology) , quantum gate , computer science , construct (python library) , quantum , quantum mechanics , quantum computer , quantum operation , open quantum system , computer network , mathematics , combinatorics , repressor , transcription factor , gene , mathematical analysis , biochemistry , chemistry
We show how a nonlocal and open-target destination quantum controlled-Not CNOT gate can be probabilistically implemented by using partially entangled pairs of particles. We first investigate the controlled implementation of a nonlocal and three-target destination CNOT gate using three partially entangled pairs, and then generalize the scheme to the case of N-target destination. In this scheme, Alice’s local generalized measurement described by a positive operator valued measurement POVM plays a key role. We construct the required POVM. It is worth noting that deterministic and exact implementation of a nonlocal CNOT gate can be realized using partially entangled pairs.