In this article we review the astrophysical application of gravitational microlensing. After introducing the history of gravitational lensing, we present the key equations and concept of microlensing. The most frequent microlensing events are single-lens events and historically it has been used for searching dark matter in the form of compact astrophysical halo objects in the Galactic halo. We discuss about the degeneracy problem in the parameters of lens and perturbation effects that can partially break the degeneracy between the lens parameters. The rest of paper is about the astrophysical applications of microlensing. One of the important applications is in the stellar physics by probing the surface of source stars in the high magnification microlensing events. The astrometric and polarimetric observations will be complimentary for probing the atmosphere and stellar spots on the surface of source stars. Finally we discuss about the future projects as space based telescopes for parallax and astrometry observations of microlensing events. With this project, we would expect to produce a complete stellar and remnant mass function and study the structure of Galaxy in term of distribution of stars along our line of sight towards the centre of galaxy.
Microlensing Detection and Inference via Learned Bayes Factors
Ciela Institute, Montreal Institute for Astrophysics and Machine Learning（Ciela研究所，蒙特利尔天体物理与机器学习研究所）；Mila - Quebec AI Institute（Mila-魁北克人工智能研究所）；Department of Physics, Université de Montréal（蒙特利尔大学物理系）；Center for Computational Astrophysics, Flatiron Institute（Flatiron研究所计算天体物理学中心）；Perimeter Institute for Theoretical Physics（理论物理珀蒂默研究所）；Trottier Space Institute, McGill University（麦吉尔大学特罗蒂尔空间研究所）
Measuring gravitational lensing time delays with quantum information processing
Joint Center for Quantum Information and Computer Science, NIST/University of Maryland（量子信息与计算机联合中心，美国国家标准与技术研究院/马里兰大学）；Department of Computer Science, University of Maryland（马里兰大学计算机科学系）；Maryland Center for Fundamental Physics, University of Maryland（马里兰基础物理中心，马里兰大学）；Department of Physics & Astronomy, The Johns Hopkins University（约翰斯·霍普金斯大学物理与天文学系）；Department of Physics & Astronomy, University of British Columbia（不列颠哥伦比亚大学物理与天文学系）；Joint Quantum Institute, NIST/University of Maryland（量子联合研究所，美国国家标准与技术研究院/马里兰大学）；Department of Physics, Massachusetts Institute of Technology（麻省理工学院物理系）；Institute for Advanced Computer Studies, University of Maryland（马里兰大学高级计算机研究所）
