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arXiv 2202.00840quant-ph
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基于量子隐形传态的无开关时域光量子计算

Switching-free time-domain optical quantum computation with quantum teleportation

Warit Asavanant, Kosuke Fukui, Atsushi Sakaguchi, Akira Furusawa

摘要:

光开关和重路由网络是实现光量子计算机的主要障碍。特别是,这两个组件已被认为是基于测量的时域光量子计算的重要组成部分,近年来在可扩展性方面取得了可喜的发展。然而,实现具有足够性能的光开关和重路由网络在实验上具有挑战性,因为它们必须具有极低的损耗、小的开关时间、高重复率和最小的光学非线性。在这项工作中,我们提出了一个光量子计算平台,不需要这样的光开关。我们的方法是基于连续变量测量的量子计算,其中,而不是典型的集群状态,我们修改的量子纠缠的结构,使量子隐形传态协议可以取代光开关和重路由。我们还表明,当与Gottesman-Kitaev-Preskill编码相结合时,我们的结构可以优于光开关的光损耗不低时的结构。

英文摘要:

Optical switches and rerouting network are main obstacles to realize optical quantum computer. In particular, both components have been considered as essential components to the measurement-based time-domain optical quantum computation, which has seen promising developments regarding scalability in the recent years. Realizing optical switches and rerouting network with sufficient performance is, however, experimentally challenging as they must have extremely low loss, small switching time, high repetition rate, and minimum optical nonlinearity. In this work, we present an optical quantum computation platform that does not require such optical switches. Our method is based on continuous-variable measurement-based quantum computation, where instead of the typical cluster states, we modify the structure of the quantum entanglements, so that quantum teleportation protocol can be employed instead of the optical switching and rerouting. We also show that when combined with Gottesman-Kitaev-Preskill encoding, our architecture can outperform the architecture with optical switches when the optical losses of the switches are not low.

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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