连贯性(哲学赌博策略)
量子位元
量子力学
物理
相干时间
量子
本征函数
极化子
激发态
磁通量子比特
电子
特征向量
作者
Wei Qiu,Xiu-Juan Miao,Shuang Han,Wei Zhang,Xin-Jun Ma,Yong Sun,Jing‐Lin Xiao
标识
DOI:10.1142/s021974992350003x
摘要
In this work, the energies and eigenfunctions of ground state and first-excited states (GFES) of a strongly coupled polaron in a quantum pseudo-dot (QPD) were studied by using variational method of Pekar type (VMPT). A single qubit can be realized in this two-level quantum system. Then, we calculated the coherence time of a QPD qubit by employing the Fermi Golden Rule. The temperature effects on the coherence time are taken into account by using the quantum statistics theory (QST) and self-consistent calculation method. According to the obtained results, it is found that the coherence time increases with decreasing temperature. Also, this time is a decaying function of the chemical potential of the two-dimensional electron gas and the zero point of the PHP.
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