CAJ | 학술논문

提出了一个用三粒子纠缠的GHZ态作为量子信道实现多点控制的远程单比特幺正变换的操纵方案.在该方案中,发送者Alice能"传送"一个幺正变换给远距离的接收者Bob,此幺正变换的结构分别由Alice和Bob决定.而Alice与Bob间的量子信道宽度,亦远程单比特幺正变换的成功操纵几率则由第三者Cindy控制.Cindy与Alice(Bob)间的经典通讯也由Cindy控制.
제출료일개용삼입자규전적GHZ태작위양자신도실현다점공제적원정단비특요정변환적조종방안.재해방안중,발송자Alice능"전송"일개요정변환급원거리적접수자Bob,차요정변환적결구분별유Alice화Bob결정.이Alice여Bob간적양자신도관도,역원정단비특요정변환적성공조종궤솔칙유제삼자Cindy공제.Cindy여Alice(Bob)간적경전통신야유Cindy공제.
Utilizing the entanglement property of Greenberger-Horne-Zeilinger (GHZ) state, a theoretical scheme to realize multicontrol remote single qubit unitary transformation is presented. In the present scheme, one party (Alice) can perform a unitary transformation on remote quantum system (Bob), in which the full structure of the unitary transformation is in a sense split and controlled locally by the two parties. By adjusting the measurement basis, the third (Cindy) can modulate the entanglement between Alice and Bob to control the probability of successful implementation. The communication between Cindy and Alice (Bob) is also controlled by Cindy in quantum way.