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arXiv 1502.07437quant-ph
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多光子量子比特的近确定性Bell测量及其在量子信息处理中的应用

Nearly Deterministic Bell Measurement for Multiphoton Qubits and Its Application to Quantum Information Processing

Seung-Woo Lee, Kimin Park, Timothy C. Ralph, Hyunseok Jeong

摘要:

我们提出了一个Bell测量方案,利用一个逻辑量子比特与任意数量的光子在Greenberger-Horne-Zeilinger(GHZ)纠缠中进行测量.值得注意的是,贝尔测量以及GHZ纠缠的隐形传态的成功概率可以任意高,仅使用线性光学元件和光子开关测量,随着光子数量的增加。我们的方案优于以前的建议,使用单光子量子比特时,比较成功的概率方面的平均光子使用。它具有实验可行性的另一个重要优点是它不需要光子数分辨测量。我们的方案为全光量子信息处理提供了一种新的选择。

英文摘要:

We propose a Bell measurement scheme by employing a logical qubit in Greenberger-Horne-Zeilinger (GHZ) entanglement with an arbitrary number of photons. Remarkably, the success probability of the Bell measurement as well as teleportation of the GHZ entanglement can be made arbitrarily high using only linear optics elements and photon on-off measurements as the number of photons increases. Our scheme outperforms previous proposals using single photon qubits when comparing the success probabilities in terms of the average photon usages. It has another important advantage for experimental feasibility that it does not require photon number resolving measurements. Our proposal provides an alternative candidate for all-optical quantum information processing.

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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