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Journal Article

Correlation measurement of squeezed light

MPS-Authors
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Andersen,  Ulrik L.
Quantum Information Processing, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Wittmann,  Christoffer
Quantum Information Processing, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Leuchs,  Gerd
Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Citation

Krivitsky, L. A., Andersen, U. L., Dong, R., Huck, A., Wittmann, C., & Leuchs, G. (2009). Correlation measurement of squeezed light. PHYSICAL REVIEW A, 79(3): 033828. doi:10.1103/PhysRevA.79.033828.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002D-6C09-4
Abstract
We study the implementation of a correlation measurement technique for the characterization of squeezed light which is nearly free of electronic noise. With two different sources of squeezed light, we show that the sign of the covariance coefficient, revealed from the time-resolved correlation data, is witnessing the presence of squeezing in the system. Furthermore, we estimate the degree of squeezing using the correlation method and compare it to the standard homodyne measurement scheme. We show that the role of electronic detector noise is minimized using the correlation approach as opposed to homodyning where it often becomes a crucial issue.