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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
Published on: May 30, 2014
Quantum correlations induced by multiple scattering of quadrature squeezed light
Optics Express
|June 12, 2009
Summary
Quantum correlations emerge when squeezed light travels through scattering media, detectable via photon number fluctuations. These spatial quantum correlations lack classical explanations and are not observed in quadrature amplitudes.
Area of Science:
- Quantum Optics
- Photonics
- Condensed Matter Physics
Background:
- Quantum squeezing introduces non-classical light states.
- Multiple scattering media randomize light propagation.
- Understanding light-matter interactions in complex media is crucial.
Purpose of the Study:
- Investigate the impact of multiple scattering on quadrature squeezed light.
- Identify and characterize novel quantum correlations induced by scattering.
- Explore the manifestation of these correlations in measurable optical properties.
Main Methods:
- Propagating quadrature squeezed light through a random scattering medium.
- Measuring intensity fluctuations in transmission and reflection.
- Analyzing photon number correlations.
- Comparing results with quadrature amplitude measurements.
Main Results:
- Pronounced spatial quantum correlations were observed, exceeding classical analogues.
- These correlations were detectable through intensity fluctuations of total transmission/reflection.
- No significant spatial quantum correlations were found in quadrature amplitudes.
- Excess noise above the shot noise level was noted in quadrature amplitudes.
Conclusions:
- Multiple scattering induces unique spatial quantum correlations in squeezed light.
- Photon number fluctuations serve as a key indicator of these non-classical effects.
- The findings highlight the distinct behavior of quantum correlations compared to classical light properties in complex media.
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