论文标题

通过本地行动和经典交流对费米子国家的明确歧视

Unambiguous discrimination of Fermionic states through local operations and classical communication

论文作者

Lugli, Matteo, Perinotti, Paolo, Tosini, Alessandro

论文摘要

论文通过地方操作和古典交流(LOCC)研究了费米子状态的明确歧视。在明确歧视的任务中,不容忍任何错误,但允许不确定的结果。我们表明,与量子案例相反,并非总是有可能通过LOCC明确地区分两个费米子状态,其成功概率与允许全局测量相同的成功概率。此外,我们证明,我们可以通过由两个费米子模式制成的辅助系统克服这种限制,独立于系统的尺寸,以最大纠缠的状态制备:在这种情况下,LOCC协议实现了最佳的成功概率。

The paper studies unambiguous discrimination of Fermionic states through local operations and classical communication (LOCC). In the task of unambiguous discrimination, no error is tolerated but an inconclusive result is allowed. We show that contrary to the quantum case, it is not always possible to distinguish two Fermionic states through LOCC unambiguously with the same success probability as if global measurements were allowed. Furthermore, we prove that we can overcome such a limit through an ancillary system made of two Fermionic modes, independently of the dimension of the system, prepared in a maximally entangled state: in this case, LOCC protocols achieve the optimal success probability.

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