Time-optimal control of the purification of a qubit in contact with a structured environment
Time-optimal control of the purification of a qubit in contact with a structured environment
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DOI：
10.1103/physreva.99.033410
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发表时间：
2019-01
影响因子：
2.9
通讯作者：
J. Fischer;Daniel Basilewitsch;C. Koch;D. Sugny
中科院分区：
文献类型：
--
作者：
J. Fischer;Daniel Basilewitsch;C. Koch;D. Sugny
我们研究了与结构化环境相互作用的量子比特的纯化的时间最优控制，该结构化环境由与热浴相互作用的强耦合两能级缺陷组成。几何分析的基础上，我们表明弱和强的相互作用强度，最佳控制策略对应于量子位与水库模式共振。我们研究了量子比特与环境之间的相干性和相关性何时加速了控制过程。
We investigate the time-optimal control of the purification of a qubit interacting with a structured environment, consisting of a strongly coupled two-level defect in interaction with a thermal bath. On the basis of a geometric analysis, we show for weak and strong interaction strengths that the optimal control strategy corresponds to a qubit in resonance with the reservoir mode. We investigate when qubit coherence and correlation between the qubit and the environment speed-up the control process.