arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.00030cond-mat.mes-hallquant-ph
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用于量子技术的混合超导体-半导体系统

Hybrid superconductor-semiconductor systems for quantum technology

Mónica Benito, Guido Burkard

摘要:

超导量子器件提供了出色的连通性和可控性,而半导体自旋量子位以其持久的量子相干性、快速控制以及小型化和缩放的潜力而脱颖而出。在过去的几年里,在将超导电路和半导体器件结合成混合量子系统方面取得了显着进展,该系统受益于两种成分的物理性质。超导腔可以在电子自由度(例如半导体芯片上的单个电子的自旋)之间的长距离上调节量子相干耦合,从而为量子器件提供必要的连接性。半导体量子点中的电子自旋已经达到非常长的相干时间,并且允许快速的量子门操作,同时增加量子效率。我们总结了描述超导-半导体混合量子系统的最新进展和理论模型,解释了这些系统的局限性,并描述了未来实验和理论的不同方向。

英文摘要:

Superconducting quantum devices provide excellent connectivity and controllability while semiconductor spin qubits stand out with their long-lasting quantum coherence, fast control, and potential for miniaturization and scaling. In the last few years, remarkable progress has been made in combining superconducting circuits and semiconducting devices into hybrid quantum systems that benefit from the physical properties of both constituents. Superconducting cavities can mediate quantum-coherent coupling over long distances between electronic degrees of freedom such as the spin of individual electrons on a semiconductor chip and thus provide essential connectivity for a quantum device. Electron spins in semiconductor quantum dots have reached very long coherence times and allow for fast quantum gate operations with increasing fidelities. We summarize recent progress and theoretical models that describe superconducting-semiconducting hybrid quantum systems, explain the limitations of these systems, and describe different directions where future experiments and theory are headed.

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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