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arXiv 1503.02070quant-phcond-mat.mes-hall
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Aharonov-Bohm效应调制的光学和自旋光学叠加

Optical and spin-optical superpositions modulated by Aharonov-Bohm effect

Thiago Prudencio

摘要:

在介观体系中,通过对AB效应的控制和操纵,AB相的产生已经达到了最先进的水平。这种系统将信息传递到非经典光态的可能性增加了信息被操纵和传递的可能性。本文提出了一种从自旋电子器件拓扑自旋晶体管(TST)中产生的AB相到量子光学器件高Q腔中相干态叠加的量子转移,并讨论了AB相存在时的光学叠加和自旋光学叠加。考虑到与自旋态的相互作用以及对相干态叠加态的量子光学操纵,我们证明了在TST中产生的AB相位可以转化为相干态叠加态.我们表明,这些情况提供了由AB效应调制的两量子比特状态的例子,并且相位参数可以用来控制量子比特状态的旋转程度。我们还显示下的自旋基础上的测量,一个光学单量子比特的状态,可以调制的AB效应。在这些情况下,我们考虑了一个相干态和一个自旋态之间的耗散相互作用,并获得了AB相位,也讨论了耗散的情况下,给定的林德布拉德方程的实现和解决。关键词:量子转移;阿哈罗诺夫-玻姆相;自旋电子学;量子光学器件。

英文摘要:

Generation of Aharonov-Bohm (AB) phase has achieved a state-of-the-art in mesoscopic systems with manipulation and control of the AB effect. The possibility of transfer information enconded in such systems to non-classical states of light increases the possible scenarios where the information can be manipulated and transfered. In this paper we propose a quantum transfer of the AB phase generated in a spintronic device, a topological spin transistor (TST), to an quantum optical device, a coherent state superposition in high-Q cavity and discuss optical and spin-optical superpositions in the presence of an AB phase. We demonstrate that the AB phase generated in the TST can be transfered to the coherent state superposition, considering the interaction with the spin state and the quantum optical manipulation of the coherent state superposition. We show that these cases provide examples of two-qubit states modulated by AB effect and that the phase parameter can be used to control the degree of rotation of the qubit state. We also show under a measurement on the spin basis, an optical one-qubit state that can be modulated by the AB effect. In these cases, we consider a dispesive interaction between a coherent state and a spin state with an acquired AB phase and also discuss a dissipative case where a given Lindblad equation is achieved and solved. Keywords: Quantum transfer; Aharonov-Bohm phase; Spintronics; Quantum Optical Devices.

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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