arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 2209.02571quant-phastro-ph.IM
收藏

非平衡Hanbury-Brown-Twiss实验:理论和对双星的应用

Nonequilibrium Hanbury-Brown-Twiss experiment: Theory and application to binary stars

Adrian E. Rubio Lopez, Ashwin K. Boddeti, Fanglin Bao, Hyunsoo Choi, Zubin Jacob

摘要:

基于汉伯里-布朗和特维斯确定天狼星半径的开创性实验的强度干涉测量法形成了发展光的量子理论的基础。迄今为止,该实验的原理以各种形式应用于量子光学、成像和天文学的不同领域。虽然这项技术很强大,但它还没有推广到不同温度的物体。在这里,我们解决这个问题,使用生成功能的形式主义,采用量子热光的P-函数表示。具体地说,我们调查的两个扩展对象在不同温度下使用这个理论框架的系统的光子符合。我们在二阶量子相干性函数中显示了两个独特的方面-干涉振荡和依赖于观测频率、温度和两个物体大小的长基线渐近值。我们将我们的方法应用到双星的情况下,并讨论在实验中测量这两个功能的优点。除了每个恒星的半径和它们之间的距离的估计,我们还表明,目前的方法是适合的温度估计以及。为此,我们将其应用到双星Luhman 16和Spica $α$ Vir的实际情况。我们发现,对于目前可用的望远镜,实验演示是可行的,在短期内。我们的工作有助于量子热光强度干涉测量的基本理解,并可用作研究两体热发射器的工具-从双星到扩展对象。

英文摘要:

Intensity-interferometry based on Hanbury-Brown and Twiss's seminal experiment for determining the radius of the star Sirius formed the basis for developing the quantum theory of light. To date, the principle of this experiment is used in various forms across different fields of quantum optics, imaging and astronomy. Though, the technique is powerful, it has not been generalized for objects at different temperatures. Here, we address this problem using a generating functional formalism by employing the P-function representation of quantum-thermal light. Specifically, we investigate the photon coincidences of a system of two extended objects at different temperature using this theoretical framework. We show two unique aspects in the second-order quantum coherence function - interference oscillations and a long-baseline asymptotic value that depends on the observation frequency, temperatures and size of both objects. We apply our approach to the case of binary stars and discuss the advantages of measuring these two features in an experiment. In addition to the estimation of the radii of each star and the distance between them, we also show that the present approach is suitable for the estimation of temperatures as well. To this end, we apply it to the practical case of binary stars Luhman 16 and Spica $α$ Vir. We find that for currently available telescopes, an experimental demonstration is feasible in the near term. Our work contributes to the fundamental understanding of intensity interferometry of quantum-thermal light and can be used as a tool for studying two-body thermal emitters - from binary stars to extended objects.

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。

↑