Quantum interference and entanglement induced by multiple scattering of light

Abstract

We report on the effects of quantum interference induced by transmission of an arbitrary number of optical quantum states through a multiple scattering medium. We identify the role of quantum interference on the photon correlations and the degree of continuous variable entanglement between two output modes. It is shown that the effect of quantum interference survives averaging over all ensembles of disorder and manifests itself as increased photon correlations giving rise to photon anti-bunching. Finally, the existence of continuous variable entanglement correlations in a volume speckle pattern is predicted. Our results suggest that multiple scattering provides a promising way of coherently interfering many independent quantum states of light of potential use in quantum information processing.

5 pages including 4 figures

References in corpus (4)

• Cavity Quantum Electrodynamics with Anderson-localized Modes
• Observation of spatial quantum correlations induced by multiple scattering of non-classical light
• Two-photon speckle as a probe of multi-dimensional entanglement
• Transition from pure-state to mixed-state entanglement by random scattering

Cited by in corpus (8)

• Light fields in complex media: mesoscopic scattering meets wave control
• Quantum Correlations in Two-Particle Anderson Localization
• Entanglement and Thouless times from coincidence measurements across disordered media
• Quantum versus classical effects in two-photon speckle patterns
• Bunching and anti-bunching of localised particles in disordered media
• Transmission of quantum entanglement through a random medium
• Angular-resolved photon-coincidence measurements in a multiple-scattering medium
• Contribution of evanescent waves to the effective medium of disordered waveguides