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Resolution ofQuantumandClassical "Ghost" Imaging

Milena D’Angelo, Alejandra Valencia

Published Jan 1, 2005• 0 citations
OpenAlex

Abstract

Wecompare theaccuracy ofghost imaging produced byseparable andbyentangled systems. Imaging isshowntoreach its fundamental limit through thehighspatial resolution and non-local behavior ofentangled systems. © 2005Optical Society ofAmerica OCIScodes: (270.4180) Multiphoton processes, (000.1600) Classical andQuantum physics

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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.