论文标题
在瞬时相互作用下，大量标量场的连贯和分解功率
Cohering and decohering power of massive scalar fields under instantaneous interactions
论文作者
论文摘要
我们采用非扰动方法，基于两级Unruh-Dewitt检测器与大规模标量场之间的瞬时相互作用，我们研究了该磁场通过得出诱导量子进化通道的相干和脱附的能力来产生或破坏检测器中相干性的能力。对于一个连贯状态的磁场，报道了先前未注意到的效应，从而使该场生成的连贯性显示相对于检测器的大小的复兴模式。可以证明，通过在热场中包括质量，与零质量相比，检测器分解的最大相干状态较少。在提到的两个示例中，通过适当选择检测器半径，场能和耦合强度，可以通过测量与相干场相互作用的相互作用，或者在热场的情况下，可以通过测量检测器中存在的连贯性，或者通过测量检测器中存在的相干性或相应的最大相干状态的相应破坏。鉴于Proca超材料研究的最新进展，这些结果表明，有可能利用大量电磁学理论来构建新型应用，以用于量子技术。
Employing a non-perturbative approach based on an instantaneous interaction between a two-level Unruh-DeWitt detector and a massive scalar field, we investigate the ability of the field to generate or destroy coherence in the detector by deriving the cohering and decohering power of the induced quantum evolution channel. For a field in a coherent state a previously unnoticed effect is reported whereby the amount of coherence that the field generates displays a revival pattern with respect to the size of the detector. It is demonstrated that by including mass in a thermal field the set of maximally coherent states of the detector decoheres less compared to a zero mass. In both of the examples mentioned, by making a suitable choice of detector radius, field energy and coupling strength it is possible to infer the mass of the field by either measuring the coherence present in the detector in the case of an interaction with a coherent field or the corresponding decoherence of a maximally coherent state in the case of a thermal field. In view of recent advances in the study of Proca metamaterials, these results suggest the possibility of utilising the theory of massive electromagnetism for the construction of novel applications for use in quantum technologies.
