A bidirectional controlled quantum teleportation (BCQT) scheme was proposed by Yan Chen [Int. J. Theor. Phys. 53, 1454 (2014)] with a genuine five-qubit entangled state as quantum channel. In the scheme two remote participants have to perform some two-qubit joint operations to accomplish the BCQT task. Such joint operations are nonlocal and usually regarded as serious faults in some sense. To overcome them, in this paper we put forward an optimized version. Our scheme has the distinct advantages of degrading the necessary-operation complexity (i.e., both intensity and difficulty) and consuming fewer classical resources as well as owing higher intrinsic efficiency in contrast to Chen’s. Besides, it is feasible in experiment and applicable in the intending quantum network.

中文翻译：

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优化具有真正五量子位纠缠态的双向受控量子隐形传态方案

Yan Chen 提出了一种双向可控量子隐形传态（BCQT）方案。J.理论。物理。53, 1454 (2014)] 以真正的五量子比特纠缠态作为量子通道。在该方案中，两个远程参与者必须执行一些双量子比特联合操作才能完成 BCQT 任务。这种联合行动是非局部的，通常在某种意义上被认为是严重的错误。为了克服它们，在本文中我们提出了一个优化版本。与陈的方案相比，我们的方案具有降低必要操作复杂性（即强度和难度）和消耗更少的经典资源以及具有更高的内在效率的明显优势。此外，它在实验中是可行的，适用于预期的量子网络。