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arXiv 1809.06930cond-mat.mes-hall
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电子输运中自旋振荡和拉比振荡的共存

Coexisting spin and Rabi-oscillations at intermediate time in electron transport through a photon cavity

Vidar Gudmundsson, Hallmann Gestsson, Nzar Rauf Abdullah, Chi-Shung Tang, Andrei Manolescu, Valeriu Moldoveanu

摘要:

我们从理论上模拟了在FIR光子腔中二维金属丝上刻蚀的非对称双量子点的含时输运。对于瞬态和中间的时间制度的电流和平均光子数计算通过求解一个马尔可夫主方程的装扮状态图片,与库仑相互作用也被考虑在内。我们预测,在存在横向磁场的interdot拉比振荡出现在中间和瞬态政权共存的较慢的非平衡波动的状态的占领相反的自旋取向。点间拉比振荡引起整个系统的电荷振荡和瞬态源极和漏极电流之间的相位差。我们指出了库仑阻塞和光子辅助输运机制中稳态关联函数之间的差异。

英文摘要:

We model theoretically the time-dependent transport through an asymmetric double quantum dot etched in a two-dimensional wire embedded in a FIR photon cavity. For the transient and the intermediate time regimes the currents and the average photon number are calculated by solving a Markovian master equation in the dressed-states picture, with the Coulomb interaction also being taken into account. We predict that in the presence of a transverse magnetic field the interdot Rabi oscillations appearing in the intermediate and transient regime coexist with slower non-equilibrium fluctuations in the occupation of states for opposite spin orientation. The interdot Rabi oscillation induces charge oscillations across the system and a phase difference between the transient source and drain currents. We point out a difference between the steady-state correlation functions in the Coulomb blocking and the photon-assisted transport regimes.

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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