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arXiv 1109.4572cond-mat.mes-hallcond-mat.supr-con
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宽带环境下超导电路兰姆位移的测量方案

Measurement scheme for the Lamb shift in a superconducting circuit with broadband environment

V. Gramich, P. Solinas, M. Möttönen, J. P. Pekola, J. Ankerhold

摘要:

受最近库珀对闸中量子力学电荷泵实验的启发,我们提出了一种测量方案,用于观测宽带环境涨落引起的二能级量子系统跃迁频率的移动。与基于腔的量子光学和相关装置相比,考虑了热相储层的影响。一个彻底的分析弱耦合主方程的兰姆和斯塔克位移的补充非微扰的结果,一个精确可解的谐波系统的模型。详细分析了在实验可行的超导电路中测量兰姆位移的实验协议,并通过数值模拟得到了支持。

英文摘要:

Motivated by recent experiments on quantum mechanical charge pumping in a Cooper pair sluice, we present a measurement scheme for observing shifts of transition frequencies in two-level quantum systems induced by broadband environmental fluctuations. In contrast to quantum optical and related set-ups based on cavities, the impact of a thermal phase reservoir is considered. A thorough analysis of Lamb and Stark shifts within weak-coupling master equations is complemented by non-perturbative results for the model of an exactly solvable harmonic system. The experimental protocol to measure the Lamb shift in experimentally feasible superconducting circuits is analysed in detail and supported by numerical simulations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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