Progress in superconducting qubits from the perspective of coherence and readout

Progress in superconducting qubits from the perspective of coherence and readout
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从相干性和读出的角度研究超导量子比特的进展

DOI:
10.1088/1674-1056/22/11/110313
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发表时间:
2013-11
期刊:
影响因子:
1.7
通讯作者:
陈宇
陈宇
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
王浩华;王浩华;陈宇;陈宇

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超导量子比特是基于约瑟夫森结的电路,表现出宏观量子行为,可以作为人造原子来操纵。得益于发达的微加工技术和微波工程技术,超导量子比特在设计灵活性、可控性和可扩展性方面具有很大的优势。在过去的十年中,该领域取得了迅速的进展,极大地提高了我们对量子比特退相干和电路优化的理解。单量子位相干时间稳定地提高到10到100 μs,从而可以演示高保真门操作和基于测量的反馈控制。在这里,我们回顾了超导量子比特的相干性和读出的最新进展。
Superconducting qubits are Josephson junction-based circuits that exhibit macroscopic quantum behavior and can be manipulated as artificial atoms. Benefiting from the well-developed technology of microfabrication and microwave engineering, superconducting qubits have great advantages in design flexibility, controllability, and scalability. Over the past decade, there has been rapid progress in the field, which greatly improved our understanding of qubit decoherence and circuit optimization. The single-qubit coherence time has been steadily raised to the order of 10 to 100 μs, allowing for the demonstration of high-fidelity gate operations and measurement-based feedback control. Here we review recent progress in the coherence and readout of superconducting qubits.
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