|
| related topics |
| {light, field, probe} |
| {state, states, coherent} |
| {photon, photons, single} |
| {cos, sin, state} |
| {bell, inequality, local} |
| {classical, space, random} |
| {entanglement, phys, rev} |
| {operator, operators, space} |
| {cavity, atom, atoms} |
| {energy, state, states} |
|
Polarization quantum properties in type-II Optical Parametric Oscillator
below threshold
Roberta Zambrini, Alessandra Gatti, Luigi Lugiato, Maxi San Miguel
abstract: We study the far field spatial distribution of the quantum fluctuations in
the transverse profile of the output light beam generated by a type II Optical
Parametric Oscillator below threshold, including the effects of transverse
walk-off. We study how quadrature field correlations depend on the
polarization. We find spatial EPR entanglement in quadrature-polarization
components: For the far field points not affected by walk-off there is almost
complete noise suppression in the proper quadratures difference of any
orthogonal polarization components. We show the entanglement of the state of
symmetric intense, or macroscopic, spatial light modes. We also investigate
nonclassical polarization properties in terms of the Stokes operators. We find
perfect correlations in all Stokes parameters measured in opposite far field
points in the direction orthogonal to the walk-off, while locally the field is
unpolarized and we find no polarization squeezing.
- oai_identifier:
- oai:arXiv.org:quant-ph/0306134
- categories:
- quant-ph
- comments:
- 16 pages, 18 figures
- doi:
- 10.1103/PhysRevA.68.063809
- arxiv_id:
- quant-ph/0306134
- created:
- 2003-06-19
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