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Analysis of the geometric phase for a nanowire-bridged superconducting Fabry-Perot resonator

机译:纳米线桥超导法布里-珀罗谐振器的几何相位分析

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摘要

The geometric phases of a nanowire-bridged superconducting Fabry-Perot resonator subjected to a microwave transmission have been investigated through its modelling into a RLC-circuit. Because the Hamiltonian of the system is a somewhat complicated form, special mathematical techniques, such as the invariant operator method and the unitary transformation approach, have been adopted in order to treat the system; These methods are very useful for managing complicated time-dependent Hamiltonian systems. We have rigorously evaluated the analytical geometric phases in both the Fock and coherent states. Typically, the geometric phases oscillate and the amplitude of such oscillations tend to grow over time. The influence of parameters of the system on the geometric phases has been analyzed in detail through the relevant illustrations. From our research, the concept of geometric phases and associated quantum mechanical characters of the system has been clarified. Our investigation for the geometric phases is useful for understanding topological features of the system, that take place through the evolution of the wave functions.
机译:通过将其建模为RLC电路,研究了纳米线桥接的超导Fabry-Perot谐振器经历微波传输的几何相位。由于系统的哈密顿量是某种复杂的形式,因此采用特殊的数学技术(例如不变算子方法和unit变换方法)来处理系统。这些方法对于管理复杂的时间相关的汉密尔顿系统非常有用。我们已经严格评估了Fock和相干态的解析几何相位。通常,几何相位振荡,并且这种振荡的幅度倾向于随时间增长。已通过相关插图详细分析了系统参数对几何相位的影响。通过我们的研究,系统的几何相概念和相关的量子力学特征已经得到阐明。我们对几何相位的研究对于了解系统的拓扑特征很有用,这些特征是通过波动函数的演化而发生的。

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