测量设备无关条件下三粒子态的纠缠目击
首发时间:2019-01-28
摘要:量子纠缠在量子领域的研究中十分重要,实际测量设备不完美会导致对量子态的误判,即把可分态误判为纠缠态。测量设备无关条件下的纠缠目击,免除了对测量设备的各种表征,对于测量设备之间共享的量子态,只要最终所统计出来的概率结果满足纠缠目击的条件,就可以判定测量设备之间共享的量子态是纠缠态还是可分态。本文在测量设备无关条件下,对于三粒子量子态的纠缠目击形式给出了详细的证明,并以含噪声的三粒子量子态-W态为例,给出了测量设备无关纠缠目击的具体分析过程。这对于三粒子量子态其他性质的研究,乃至拓展到多粒子量子态下的测量设备无关纠缠目击形式均具有十分重要的意义。
关键词: 测量设备无关纠缠目击 半量子非局域场景 含噪声的W态
For information in English, please click here
Measurement-device-independent entanglement witness for 3-partite quantum states
Abstract:Quantum entanglement is very important in the field of quantum field research. Due to the imperfection of the actual measurement equipment,it will mistake separable states for entangled states. It is a good way to solve the problem in the measuring-device-independent entanglement witness. For any quantum states, we only focus on the final probability result with the form of entanglement witness, then it can be perfectly judged whether the quantum state is entangled or separable state. In the paper, we prove the measurement-device-independent entanglement witness for 3-partite quantum states, and give the explicit example for the family of noisy 3-partite W states. It will be significant to research the entanglement witness for multiqubit entangled states.
Keywords: measurement-device-independent entanglement witness semi-quantum nonlocal scenario the family of noisy 3-partite W states
引用
No.****
动态公开评议
共计0人参与
勘误表
测量设备无关条件下三粒子态的纠缠目击
评论
全部评论0/1000