TL;DR
Quantum imaging leverages quantum entanglement to produce nonlocal 'ghost' images and surpass classical resolution limits, offering new capabilities in imaging technology.
Contribution
This paper reviews classical imaging concepts and analyzes two-photon quantum imaging, highlighting resolution enhancement and ghost imaging phenomena.
Findings
Demonstrated nonlocal 'ghost' imaging.
Achieved spatial resolution beyond diffraction limit.
Analyzed physics of quantum resolution enhancement.
Abstract
One of the most surprising consequences of quantum mechanics is the entanglement of two or more distant particles. Although questions regarding fundamental issues of quantum theory still exist, quantum entanglement has started to play important roles in practical engineering applications. Quantum imaging is one of these exciting areas. Quantum imaging has demonstrated two peculiar features: (1) reproducing "ghost" images in a "nonlocal" manner, and (2) enhancing the spatial resolution of imaging beyond the diffraction limit. In this article, we start with the review of classical imaging to establish the basic concepts and formalisms of imaging. We then analyze two-photon imaging with particular emphasis on the physics of spatial resolution enhancement and the "ghost" imaging phenomenon.
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Taxonomy
TopicsRandom lasers and scattering media · Photoacoustic and Ultrasonic Imaging · Quantum Information and Cryptography