Ghost imaging with thermal light: Comparing entanglement and classical correlation

We consider a scheme for coherent imaging that exploits the classical correlation of two beams obtained by splitting incoherent thermal radiation. This case is analyzed in parallel with the configuration based on two entangled beams produced by parametric down-conversion, and a precise formal analog...

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Bibliographic Details
Published in:Physical review letters 2004-08, Vol.93 (9), p.093602.1-093602.4
Main Authors: GATTI, A, BRAMBILLA, E, BACHE, M, LUGIATO, L. A
Format: Article
Language:English
Subjects:
Exact sciences and technology
Frequency conversion
harmonic generation, including high-order harmonic generation
Fundamental areas of phenomenology (including applications)
Nonclassical field states
squeezed, antibunched and sub-poissonian states
operational definitions of the phase of the field
phase measurements
Nonlinear optics
Optics
Physics
Quantum optics
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Summary:We consider a scheme for coherent imaging that exploits the classical correlation of two beams obtained by splitting incoherent thermal radiation. This case is analyzed in parallel with the configuration based on two entangled beams produced by parametric down-conversion, and a precise formal analogy is pointed out. This analogy opens the possibility of using classical beams from thermal radiation for ghost imaging schemes in the same way as entangled beams.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.93.093602