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Superconducting qubit in waveguide cavity with coherence time approaching 0.1ms

ycliu1989 添加于 2012-3-4 19:29 | 1732 次阅读 | 0 个评论

作者
Rigetti C, Poletto S, Gambetta JM, Plourde BLT, Chow JM, Corcoles AD, Smolin JA, Merkel ST, Rozen JR, Keefe GA, Rothwell MB, Ketchen MB, Steffen M
摘要
We report a superconducting artificial atom with an observed quantum coherence time of T2*=95us and energy relaxation time T1=70us. The system consists of a single Josephson junction transmon qubit embedded in an otherwise empty copper waveguide cavity whose lowest eigenmode is dispersively coupled to the qubit transition. We attribute the factor of four increase in the coherence quality factor relative to previous reports to device modifications aimed at reducing qubit dephasing from residual cavity photons. This simple device holds great promise as a robust and easily produced artificial quantum system whose intrinsic coherence properties are sufficient to allow tests of quantum error correction.
详细资料
- 关键词: quant-ph
- 文献种类:手稿
- 期卷页: 2012年
- 日期: 2012-2-25
- 发布方式: arXiv e-prints
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