Influence of low-frequency noise on macroscopic quantum tunneling in superconducting circuits

Details Influence of low-frequency noise on macroscopic quantum tunneling in superconducting circuits Influence of low-frequency noise on macroscopic quantum tunneling in superconducting circuits

2004-11-25

arxiv.org/abs/cond-mat/0411633v1

Phys. Rev. B 71, 134501 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

11 pages, 7 figures

Scientific paper

10.1103/PhysRevB.71.134501

The influence of low to moderate frequency environments on Macroscopic Quantum Tunneling (MQT) in superconducting circuits is studied within the Im-F approach to evaluate tunneling rates. Particular attention is paid to two model environments, namely, a pure sluggish bath and a sluggish bath with additional 1/f-noise. General findings are applied to Zener flip tunneling, a MQT phenomenon recently predicted and observed in a superconducting circuit implementing a quantum bit.

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