Coherent dynamics of a qubit-oscillator system in a noisy environment

被引：9
|
作者：
Wu, Wei [1 ]
Cheng, Jun-Qing [2 ,3 ]
机构：
[1] Beijing Computat Sci Res Ctr, Beijing 100193, Peoples R China
[2] Zhejiang Univ, Zhejiang Inst Modern Phys, Hangzhou 310027, Zhejiang, Peoples R China
[3] Zhejiang Univ, Dept Phys, Hangzhou 310027, Zhejiang, Peoples R China
来源：
QUANTUM INFORMATION PROCESSING | 2018年 / 17卷 / 11期
基金：
中国博士后科学基金;
关键词：
Quantum dissipative dynamics; Non-Markovian effect; Quantum open system; NON-MARKOVIAN DYNAMICS; SINGLE-ELECTRON SPIN; TIME EVOLUTION; QUANTUM; SUPPRESSION;
D O I：
10.1007/s11128-018-2071-y
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We investigate the non-Markovian dynamics of a qubit-oscillator system embedded in a noisy environment by employing the hierarchical equations of motion approach. It is shown that the decoherence rate of the whole qubit-oscillator-bath system can be significantly suppressed by enhancing the coupling strength between the qubit and the harmonic oscillator. Moreover, we find that the non-Markovian memory character of the bath is able to facilitate a robust quantum coherent dynamics in this qubit-oscillator-bath system. Our findings may be used to engineer some tunable coherent manipulations in mesoscopic quantum circuits.
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收藏
页数：14
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