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Testing the entanglement of intense beams produced by a non-degenerate optical parametric oscillator

Villar, A.S. ; Martinelli, M. ; Nussenzveig, P.

Optics communications, 2004-12, Vol.242 (4-6), p.551-563 [Periódico revisado por pares]

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Título:
Testing the entanglement of intense beams produced by a non-degenerate optical parametric oscillator
Autor: Villar, A.S. ; Martinelli, M. ; Nussenzveig, P.
Assuntos: Classical and quantum physics: mechanics and fields ; Entanglement ; Exact sciences and technology ; 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 ; Optical parametric oscillator ; Optics ; Physics ; Quantum cryptography ; Quantum information ; Quantum optics
É parte de: Optics communications, 2004-12, Vol.242 (4-6), p.551-563
Descrição: We propose a direct measurement of the quadrature correlations of signal and idler beams in a non-degenerate optical parametric oscillator operating above threshold. We investigate the experimental limits where quantum correlations can be observed, fulfilling an inseparability criterion for defining them as intense entangled beams. The use of optical cavities to access quadrature noise in this situation is studied, and its advantages over homodyne detection are discussed. We also consider the application of this entanglement and the quadrature noise measurement technique to quantum cryptography.
Editor: Amsterdam: Elsevier B.V
Idioma: Inglês

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