Sub-Rayleigh Quantum Imaging

Details Sub-Rayleigh Quantum Imaging Sub-Rayleigh Quantum Imaging

2008-04-17

arxiv.org/abs/0804.2875v1

V. Giovannetti, S. Lloyd, L. Maccone, J. H. Shapiro, Phys. Rev. A 79, 013827 (2009).

Physics

Quantum Physics

4 pages, two figures

Scientific paper

10.1103/PhysRevA.79.013827

No imaging apparatus can produce perfect images: spatial resolution is limited by the Rayleigh diffraction bound that is a consequence of the imager's finite spatial extent. We show some N-photon strategies that permit resolution of details that are smaller than this bound, attaining either a 1/sqrt(N) enhancement (standard quantum limit) or a 1/N enhancement (Heisenberg limit) over standard techniques. In the incoherent imaging regime, the methods presented are loss resistant, because they can be implemented with classical-state light sources. Our results may be of importance in many applications: microscopy, telescopy, lithography, metrology, etc.

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