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arXiv 1509.01239quant-ph
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二分量子比特网络中动态保护门的通用集合II:[[5,1,3]]量子纠错码的软脉冲实现

Universal set of Dynamically Protected Gates for Bipartite Qubit Networks II: Soft Pulse Implementation of the [[5,1,3]] Quantum Error Correcting Code

Amrit De, Leonid P. Pryadko

摘要:

我们使用我们先前设计的基于整形去耦脉冲序列的通用量子门集,在具有始终开启的伊辛耦合的单独控制的量子比特网络上,使用单纠错五量子比特码来模拟重复性量子纠错(QEC)。除了充当精确的量子门之外,该序列还提供低频相位噪声的动态解耦(DD)。该模拟涉及在数万个控制脉冲的持续时间内集成六个量子比特的幺正动力学,使用经典的随机相位噪声作为退相干源。组合的DD/QEC协议显着提高了一致性,QEC单独负责一个数量级以上的失真减少。

英文摘要:

We model repetitive quantum error correction (QEC) with the single-error-correcting five-qubit code on a network of individually-controlled qubits with always-on Ising couplings, using our previously designed universal set of quantum gates based on sequences of shaped decoupling pulses. In addition to serving as accurate quantum gates, the sequences also provide dynamical decoupling (DD) of low-frequency phase noise. The simulation involves integrating unitary dynamics of six qubits over the duration of tens of thousands of control pulses, using classical stochastic phase noise as a source of decoherence. The combined DD/QEC protocol dramatically improves the coherence, with the QEC alone responsible for more than an order of magnitude infidelity reduction.

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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