真正的多方爱因斯坦-波多尔斯基-罗森导引。

Genuine multipartite Einstein-Podolsky-Rosen steering.

机构信息

Centre for Quantum Atom Optics, Swinburne University of Technology, Melbourne, 3122 Australia and State Key Laboratory of Mesoscopic Physics, School of Physics, Peking University, Beijing 100871 China.

Centre for Quantum Atom Optics, Swinburne University of Technology, Melbourne, 3122 Australia.

出版信息

Phys Rev Lett. 2013 Dec 20;111(25):250403. doi: 10.1103/PhysRevLett.111.250403. Epub 2013 Dec 18.

DOI:10.1103/PhysRevLett.111.250403

PMID:24483733

Abstract

We develop the concept of genuine N-partite Einstein-Podolsky-Rosen (EPR) steering. This nonlocality is the natural multipartite extension of the original EPR paradox. Useful properties emerge that are not guaranteed for genuine multipartite entangled states. In particular, there is a close link with the task of one-sided, device-independent quantum secret sharing. We derive inequalities to demonstrate multipartite EPR steering for Greenberger-Horne-Zeilinger and Gaussian continuous variable states in loophole-free scenarios.

摘要

我们提出了真正的 N 部分爱因斯坦-波多尔斯基-罗森（EPR）导引的概念。这种非局域性是原始 EPR 佯谬的自然多体扩展。出现了一些有用的性质，这些性质并不能保证对真正的多体纠缠态有效。特别是，它与单边、设备无关的量子秘密共享任务密切相关。我们推导出不等式，以证明无漏洞情况下的 GHZ 态和高斯连续变量态的多体 EPR 导引。