Quantum correlation of light scattered by disordered media
arXiv:1512.02023 · doi:10.1364/OE.24.004662
Abstract
We study theoretically how multiple scattering of light in a disordered medium can spontaneously generate quantum correlations. In particular we focus on the case where the input state is Gaussian and characterize the correlations between two arbitrary output modes. As there is not a single all-inclusive measure of correlation, we characterise the output correlations with three measures: intensity fluctuations, entanglement, and quantum discord. We found that, while a single mode coherent state input can not produce quantum correlations, any other Gaussian input will produce them in one form or another. This includes input states that are usually regarded as more classical than coherent ones, such as thermal states, which will produce a non zero quantum discord.
References in corpus (9)
- Non-invasive real-time imaging through scattering layers and around corners via speckle correlations
- Correlated imaging, quantum and classical
- Quantum Correlations in Two-Particle Anderson Localization
- Two-photon quantum walk in a multimode fiber
- Observation of spatial quantum correlations induced by multiple scattering of non-classical light
- Fundamental Limits of Classical and Quantum Imaging
- Quantum interference and entanglement induced by multiple scattering of light
- Nonlinear coherent transport of waves in disordered media
- Verification of quantum discord