Entanglement measurement of the quadrature components without the homodyne detection in the spatially multi-mode far-field

Details Entanglement measurement of the quadrature components without the homodyne detection in the spatially multi-mode far-field Entanglement measurement of the quadrature components without the homodyne detection in the spatially multi-mode far-field

2009-07-11

arxiv.org/abs/0907.1964v1

Physics

Quantum Physics

11 pages, 5 figures, RevTeX4. Submitted to Phys. Rev. A

Scientific paper

We consider the measuring procedure that in principle allows to avoid the homodyne detection for the simultaneous selection of both quadrature components in the far-field. The scheme is based on the use of the coherent sources of the non-classical light. The possibilities of the procedure are illustrated on the basis of the use of pixellised sources, where the phase-locked sub-Poissonian lasers or the degenerate optical parametric oscillator generating above threshold are chosen as the pixels. The theory of the pixellised source of the spatio-temporal squeezed light is elaborated as a part of this investigation.

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