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  Stokes-operator-squeezed continuous-variable polarization states

Schnabel, R., Bowen, W. P., Treps, N., Ralph, T. C., Bachor, H.-A., & Lam, P. K. (2003). Stokes-operator-squeezed continuous-variable polarization states. Physical Review A, 67: 012316.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-5339-9 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-533A-7
Genre: Journal Article

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59737.pdf (Preprint), 430KB
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Schnabel, Roman1, Author              
Bowen, Warwick P., Author
Treps, Nicolas, Author
Ralph, Timothy C., Author
Bachor, Hans-A., Author
Lam, Ping Koy, Author
Affiliations:
1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24010              

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 Abstract: We investigate nonclassical Stokes-operator variances in continuous-wave polarization-squeezed laser light generated from one and two optical parametric amplifiers. A general expression of how Stokes-operator variances decompose into two-mode quadrature operator variances is given. Stokes parameter variance spectra for four different polarization-squeezed states have been measured and compared with a coherent state. Our measurement results are visualized by three-dimensional Stokes-operator noise volumes mapped on the quantum Poincaré sphere. We quantitatively compare the channel capacity of the different continuous-variable polarization states for communication protocols. It is shown that squeezed polarization states provide 33% higher channel capacities than the optimum coherent beam protocol.

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 Dates: 2003
 Publication Status: Published in print
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 Identifiers: eDoc: 59737
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Title: Physical Review A
Source Genre: Journal
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Pages: - Volume / Issue: 67 Sequence Number: 012316 Start / End Page: - Identifier: -