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arXiv 2107.07992quant-ph
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利用最优控制产生腔场耦合自旋非经典态的极限探讨

Exploring the limits of the generation of non-classical states of spins coupled to a cavity by optimal control

Quentin Ansel, Dominique Sugny, Bruno Bellomo

摘要:

我们研究了通过自旋的集体驱动耦合到一个公共腔的自旋的非经典态的产生。我们提出了一种控制策略,使用专门设计的一系列短相干和压缩脉冲,这具有实验上可实现的最先进的技术的关键优势。控制序列的参数是通过优化算法找到的。我们考虑两个和四个自旋的情况下,目标是达到一个明确的目标状态或状态最大化的非经典性的措施。讨论了腔阻尼和自旋偏移对非经典态产生的影响。我们还探讨了压缩场在多大程度上有助于提高控制过程的效率。

英文摘要:

We investigate the generation of non-classical states of spins coupled to a common cavity by means of a collective driving of the spins. We propose a control strategy using specifically designed series of short coherent and squeezing pulses, which have the key advantage of being experimentally implementable with the state-of-the art techniques. The parameters of the control sequence are found by means of optimization algorithms. We consider the cases of two and four spins, the goal being either to reach a well-defined target state or a state maximizing a measure of non-classicality. We discuss the influence of cavity damping and spin offset on the generation of non-classical states. We also explore to which extent squeezing fields help enhancing the efficiency of the control process.

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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