新科学想法 › 学术文库 › 学术文献 › 浏览文献

Coherent Josephson Qubit Suitable for Scalable Quantum Integrated Circuits

zqyin 添加于 2013-8-23 16:35 | 1397 次阅读 | 0 个评论

作者
Barends R, Kelly J, Megrant A, Sank D, Jeffrey E, Chen Y, Yin Y, Chiaro B, Mutus J, Neill C, O’Malley P, Roushan P, Wenner J, White TC, Cleland AN, Martinis JM
摘要
We demonstrate a planar, tunable superconducting qubit with energy relaxation times up to 44 μs. This is achieved by using a geometry designed to both minimize radiative loss and reduce coupling to materials-related defects. At these levels of coherence, we find a fine structure in the qubit energy lifetime as a function of frequency, indicating the presence of a sparse population of incoherent, weakly coupled two-level defects. We elucidate this defect physics by experimentally varying the geometry and by a model analysis. Our “Xmon” qubit combines facile fabrication, straightforward connectivity, fast control, and long coherence, opening a viable route to constructing a chip-based quantum computer.
详细资料
- 文献种类: Journal Article
- 期刊名称: Physical Review Letters
- 期刊缩写: Phys. Rev. Lett.
- 期卷页: 2013年第111卷第8期
- ISBN: 0031-9007
学科领域自然科学 » 物理学
相关链接 DOI URL
zqyin 的文献笔记订阅