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arXiv 0704.3489quant-phcond-mat.mes-hall
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介观区电路QED的耗散动力学

Dissipative dynamics of circuit-QED in the mesoscopic regime

Valentin Bonzom, Hichem Bouzidi, Pascal Degiovanni

摘要:

我们研究了谐振腔中初始填充介观相干场时电路QED器件的行为。腔与量子比特之间的强耦合产生了一个纠缠态,该纠缠态涉及介观准指针态关于腔耗散。相关场分量的重叠导致拉比振荡的崩溃和复苏。虽然量子位弛豫和退相不保留这些状态,一个简单的分析描述的电路QED设备,包括腔弛豫以及量子位耗散的耗散动力学从Monte-Carlo方法。的自发和诱导拉比振荡信号的显式预测推导和sucessfully与精确计算比较。我们表明,这些有趣的效果可以观察到一个10光子场在即将到来的电路QED实验。

英文摘要:

We investigate the behavior of a circuit QED device when the resonator is initially populated with a mesoscopic coherent field. The strong coupling between the cavity and the qubit produces an entangled state involving mesoscopic quasi-pointer states with respect to cavity dissipation. The overlap of the associated field components results in collapse and revivals for the Rabi oscillation. Although qubit relaxation and dephasing do not preserve these states, a simple analytical description of the dissipative dynamics of the circuit QED device including cavity relaxation as well as qubit dissipation is obtained from the Monte-Carlo approach. Explicit predictions for the spontaneous and induced Rabi oscillation signals are derived and sucessfully compared with exact calculations. We show that these interesting effects could be observed with a 10 photon field in forthcoming circuit QED experiments.

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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