Physics – Quantum Physics
Scientific paper
2005-11-04
Physical Review A 73 (2006) 012333
Physics
Quantum Physics
Scientific paper
10.1103/PhysRevA.73.012333
A new device to generate polarization-entangled light in the continuous variable regime is introduced. It consists of an Optical Parametric Oscillator with two type-II phase-matched non-linear crystals orthogonally oriented, associated with birefringent elements for adjustable linear coupling. We give in this paper a theoretical study of its classical and quantum properties. It is shown that two optical beams with adjustable frequencies and well-defined polarization can be emitted. The Stokes parameters of the two beams are entangled. The principal advantage of this setup is the possibility to directly generate polarization entangled light without the need of mixing four modes on beam splitters as required in current experimental setups. This device opens new directions for the study of light-matter interfaces and generation of multimode non-classical light and higher dimensional phase space.
Coudreau Thomas
Fabre Claude
Keller Gaëlle
Laurat Julien
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