Novel Techniques in Quantum Imaging and Spectroscopy

Quantum light has been studied extensively in recent years for its potential for providing unprecedented levels of sensitivity and resolution in applications such as imaging, spectroscopy, and sensing. New technological revolutions have begun in physics, chemical physics, biophysics, and other related fields due to the application of quantum light. The study of quantum light for imaging and spectroscopy is a timely and exciting research field at the forefront of physics and technology. It can impact many areas of science and engineering, especially in the sense that high-resolution, high signal-to-noise ratio imaging and spectroscopy with low photon flux can be realized. Recent developments in methods and techniques have made it possible to move from proof-of-principle to applications, such as biomedical imaging and earth and space science. In light of the increasing number of scientists devoting their efforts to implementing quantum technologies, Frontiers in physics is the ideal platform for bringing them together and exchanging new ideas.

This issue focuses on cutting-edge research in quantum imaging and spectroscopy. Our goal with this Topic is to present various ideas, results, and discussions about the current understanding of quantum imaging and spectroscopy, aiming at developing novel technologies and applications with high potential for impact. Both research articles and review articles are invited. Topics covered include, but are not limited to:
• Quantum imaging.
• Quantum light spectroscopy & microscopy.
• Correlation ghost imaging and plenoptic imaging.
• Deep learning-based imaging and spectroscopy.
• Superresolution imaging and noise reduction imaging.
• Quantum LiDAR.
• Single-photon LiDAR.
• Quantum-enabled bio-imaging and sensing.