Editorial Single-Photon Technologies and Applications

Single-photon technologies are vital to a broad range of research areas such as nuclear physics, astrophysics, biology and computer vision. Fields such as LiDAR, single-photon imaging, biomedical imaging, quantum communication, optical quantum computing, quantum metrology, remote sensing and non-line-of-sight (NLOS) imaging also benefit from developments in single-photon technologies. This special issue is intended to bring together a broad range of research article with interests in single-photon detectors, single photon avalanche diode (SPAD), single-photon sources, photon entanglement, NLOS imaging, computational imaging algorithms, and their general applications in quantum information science, 2D and 3D imaging, sensing and metrology. This special issue addresses the current progress and latest breakthroughs in single-photon technologies and their emergent applications, particularly covering the following areas: