Macroscopic resonant tunneling in an rf-SQUID flux qubit 被引量：1

Macroscopic resonant tunneling in an rf-SQUID flux qubit

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摘要 We have observed the macroscopic resonant tunneling of magnetic flux between macroscopically distinct quantum states in a superconducting flux qubit. The dependences of the macroscopic resonant tunneling on the barrier height of the potential well, the flux bias and the initial state are investigated. Detailed measurements of the tunneling rate as a function of the flux bias reveal the feature of the quantum noise in the superconducting flux qubit. We have observed the macroscopic resonant tunneling of magnetic flux between macroscopically distinct quantum states in a superconducting flux qubit. The dependences of the macroscopic resonant tunneling on the barrier height of the potential well, the flux bias and the initial state are investigated. Detailed measurements of the tunneling rate as a function of the flux bias reveal the feature of the quantum noise in the superconducting flux qubit.

作者丛山桦王轶文孙国柱陈健于扬吴培亨

机构地区 Research Institute of Superconductor Electronics National Laboratory of Solid State Microstructures

出处《Chinese Physics B》 SCIE EI CAS CSCD 2011年第5期130-133,共4页 中国物理B（英文版）

基金 Project supported by the New Century Excellent Talents in University,China the National Natural Science Foundation of China(Grant Nos. 11074114 and 10874074) the National Basic Research Program of China (Grant No. 2011CBA00200)

关键词 RF-SQUID macroscopic resonant tunneling quantum noise flux qubit rf-SQUID, macroscopic resonant tunneling, quantum noise, flux qubit

分类号 O469 [理学—凝聚态物理]

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Macroscopic resonant tunneling in an rf-SQUID flux qubit 被引量：1

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