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Journal of Modern Optics Volume 58, 2011 - Issue 12
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Letter

The quantum noise of guided wave acoustic Brillouin scattering with applications to continuous-variable quantum key distribution

Zheshen Zhang Georgia Tech Lorraine, Georgia Tech-CNRS, UMI 2958, 2-3 rue Marconi, Metz, France; School of Electrical and Computer Engineering, Georgia Institute of Technology, 777 Atlantic Drive NW, Atlanta 30332-0250, USA
,
Xuan-Quyen Dinh Georgia Tech Lorraine, Georgia Tech-CNRS, UMI 2958, 2-3 rue Marconi, Metz, France
&
Paul L. Voss Georgia Tech Lorraine, Georgia Tech-CNRS, UMI 2958, 2-3 rue Marconi, Metz, France; School of Electrical and Computer Engineering, Georgia Institute of Technology, 777 Atlantic Drive NW, Atlanta 30332-0250, USACorrespondence[email protected]
Pages 988-993 | Received 27 Jan 2011, Accepted 11 May 2011, Published online: 11 Jul 2011
 
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Abstract

The spectra and optical quantum state of guided acoustic wave Brillouin scattering in optical fibers are measured. Spectra from 0.95 to 2 GHz are obtained with amplitude resolution as sensitive as 0.01 shot noise unit. Quantum homodyne tomography measurements confirm the thermal quantum statistics of guided acoustic wave Brillouin scattering, which is useful knowledge in the context of experimental continuous-variable quantum key distribution.

Acknowledgements

The authors gratefully acknowledge funding from the Agence Nationale de la Recherche within the framework of the HQNET project.

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