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arXiv quant-ph/0203110quant-ph
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具有退相干的Landau-Zener模型:S=1/2的情形

The Landau-Zener Model with Decoherence: The case S=1/2

V. G. Benza, G. Strini

摘要:

我们研究了自旋耦合到振荡磁场的动力学,在存在退相干和耗散的情况下。在这方面,我们解决主方程的朗道-齐纳问题,无论是在单一的和不可逆的情况下。我们表明,一个单一的自旋可以“磁化”的方向平行于振荡偏置。当考虑从上到下的衰减时,得到的滞回特性。

英文摘要:

We study the dynamics of a spin coupled to an oscillating magnetic field, in the presence of decoherence and dissipation. In this context we solve the master equation for the Landau-Zener problem, both in the unitary and in the irreversible case. We show that a single spin can be "magnetized" in the direction parallel to the oscillating bias. When decay from upper to lower level is taken into account, hysteretic behavior is obtained.

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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