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arXiv 2412.15134quant-ph
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在猫码纠错中使用故障态

Use of Faulty States in Cat-Code Error Correction

Imperial College London(帝国理工学院);Okinawa Institute of Science and Technology Graduate University(冲绳科学技术大学院大学);The Graduate University for Advanced Studies(综合研究大学院大学);National Institute of Informatics(信息学国立研究所)

Michael Hanks, Soovin Lee, Nicolo Lo Piparo, Shin Nishio, William J. Munro, Kae Nemoto, M. S. Kim

AI总结:

本文提出利用多组件桥梁态改进猫码纠错,通过扩展可接受的辅助态范围,以非线性相互作用受限的条件下实现syndrome提取。

摘要:

boson码在故障容错量子架构、量子增强传感和纠缠分发等应用中重新受到关注。猫码被提出作为更大架构中的低层元素,旋转对称码的理论在近期文献中得到了显著扩展。然而,作为独立的量子纠错方案,利用猫码状态进行故障容错的准备和维护仍然受限于需要稳健的状态制备和强的模式相互作用。在本文中,我们考虑基于量子态传输的猫码纠错电路。我们证明可接受的辅助态类别比通常认为的更广,并利用这一点提出使用多组件『桥梁』态,尽管这些态本身不在猫码空间内,但仍能在非线性相互作用成为限制因素的 regime 中实现syndrome提取。

英文摘要:

Bosonic codes have seen a resurgence in interest for applications as varied as fault tolerant quantum architectures, quantum enhanced sensing, and entanglement distribution. Cat codes have been proposed as low-level elements in larger architectures, and the theory of rotationally symmetric codes more generally has been significantly expanded in the recent literature. The fault-tolerant preparation and maintenance of cat code states as a stand-alone quantum error correction scheme remains however limited by the need for robust state preparation and strong inter-mode interactions. In this work, we consider the teleportation-based correction circuit for cat code quantum error correction. We show that the class of acceptable ancillary states is broader than is typically acknowledged, and exploit this to propose the use of many-component ``bridge'' states which, though not themselves in the cat code space, are nonetheless capable of syndrome extraction in the regime where non-linear interactions are a limiting factor.

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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