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Towards detecting traces of non-contact quantum friction in the corrections of the accumulated geometric phase
npj Quantum Information ( IF 6.6 ) Pub Date : 2020-02-19 , DOI: 10.1038/s41534-020-0252-x
M. Belén Farías , Fernando C. Lombardo , Alejandro Soba , Paula I. Villar , Ricardo S. Decca

The geometric phase can be used as a fruitful venue of investigation to infer features of the quantum systems. Its application can reach new theoretical frontiers and imply innovative and challenging experimental proposals. Herein, we take advantage of the geometric phase to sense the corrections induced while a neutral particle travels at constant velocity in front of an imperfect sheet in quantum vacuum. As it is already known, two bodies in relative motion at constant velocity experience a quantum contactless dissipative force, known as quantum friction. This force has eluded experimental detection so far due to its small magnitude and short range. However, we give details of an innovative experiment designed to track traces of the quantum friction by measuring the velocity dependence of corrections to the geometric phase. We notice that the environmentally induced corrections can be decomposed in different contributions: corrections induced by the presence of the dielectric sheet and the motion of the particle in quantum vacuum. As the geometric phase accumulates over time, its correction becomes relevant at a relative short timescale, while the system still preserves purity. The experimentally viable scheme presented would be the first one in tracking traces of quantum friction through the study of decoherence effects on a NV center in diamond.



中文翻译:

在校正累积几何相位时,要检测非接触式量子摩擦的痕迹

几何相位可以用作推断量子系统特征的富有成果的研究场所。它的应用可以达到新的理论前沿,并暗示创新和具有挑战性的实验建议。在此,我们利用几何相位来感测在量子真空中,当中性粒子以恒定速度在不完全的薄片前面行进时引起的校正。众所周知,两个处于恒速相对运动的物体会受到量子无接触耗散力的影响,这称为量子摩擦。到目前为止,由于其大小小,距离短,目前尚无法进行实验检测。但是,我们提供了一个创新实验的详细信息,该实验旨在通过测量对几何相位的修正的速度依赖性来跟踪量子摩擦的痕迹。我们注意到,环境引起的校正可以分解为不同的贡献:由介电片的存在和量子真空中粒子的运动引起的校正。随着几何相位随时间累积,其校正在相对较短的时间范围内就变得有意义,而系统仍保持纯度。通过研究对钻石NV中心的退相干效应,提出的实验可行方案将是跟踪量子摩擦痕迹的第一个方案。而系统仍保持纯度。通过研究对钻石NV中心的退相干效应,提出的实验可行方案将是跟踪量子摩擦痕迹的第一个方案。而系统仍保持纯度。通过研究对钻石NV中心的退相干效应,提出的实验可行方案将是跟踪量子摩擦痕迹的第一个方案。

更新日期:2020-02-19
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