In this work, we propose a simple scheme of bidirectional teleportation for transferring unknown coherent superposition states. It consists of exchanging two states by using tripartite entangled coherent states between two parts. This proposed scheme is essentially based on optical devices like beam splitters, phase shifters and photon number measurement detectors. The probability of success and the mean fidelity of quantum teleportation in the presence of quantum noise are evaluated. However, the quantum Fisher information is studied to estimate some parameters such as the weight and the phase of sent states.

中文翻译：

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使用相干态的双向隐形传态

在这项工作中，我们提出了一种用于传输未知相干叠加态的双向隐形传态的简单方案。它包括通过在两个部分之间使用三方纠缠的相干状态来交换两个状态。该提议的方案基本上基于光学设备，例如分束器，移相器和光子数测量检测器。评估成功的概率和存在量子噪声时量子隐形传态的平均保真度。但是，研究了量子Fisher信息以估计一些参数，例如权重和发送状态的相位。