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arXiv 2404.00512quant-ph
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使用两种不同协议实现双量子比特态的隐形传态

Teleportation two-qubit state by using two different protocols

K. El Anouz, A. El Allati, N. Metwally

AI总结:

本文比较了基于一份或两份纠缠原子-场态拷贝的两种隐形传态协议,发现单拷贝协议在保真度和量子Fisher信息上更优,并分析了平均光子数、失谐及初态编码对传态效果的影响。

摘要:

本文考虑了两种版本的隐形传态协议,分别基于使用一份或两份纠缠原子-场态的拷贝。研究表明,使用第一种版本时,所传态的保真度以及所传态中包含的量子Fisher信息量都远优于使用第二种版本。一般而言,可以通过增大平均光子数和减小失谐参数来提高所传信息的保真度。经典信息的隐形传态保真度远优于量子信息的隐形传态。此外,初始编码在激发态中的经典信息的隐形传态效果远好于编码在基态中的情况。然而,初始编码在基态中的所传Fisher信息量远大于初始编码在纠缠态中的情况。

英文摘要:

In this contribution, two versions of teleportation protocol are considered, based on either using a single or two copies of entangled atom-field state, respectively. It is shown that, by using the first version, the fidelity of the teleported state as well as the amount of quantum Fisher information, that contains in the teleported state, are much better than using the second version. In general, one may increases the fidelity of teleported information by increasing the mean photon number and decreasing the detuning parameter. The fidelity of teleporting classical information is much better than teleporting quantum information. Moreover, teleportating classical information that initially encoded in an exited states is much better than that encodes in the ground states. However, the teleported Fisher information that initially encoded in a ground state is much larger than those initially encoded in entangled states.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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