Conference on Lasers and Electro-Optics

Tunable Delay of Entangled Images

Alberto M. Marino, Raphael C. Pooser, Vincent Boyer, Paul D. Lett

Published Jan 1, 2009• 0 citations

Abstract

We show that non-degenerate four-wave mixing in an atomic vapor can be used as a quantum delay line for multi-spatial-mode twin beams. This makes it possible to delay continuous variable entangled images without significant degradation.

DOI: 10.1364/iqec.2009.ithk3

Related papers

Production of Entangled Images With a 4-Wave Mixer

Vincent Boyer, Alberto M. Marino, Raphael C. Pooser +1 more

We show that non-degenerate 4-wave mixing in an atomic vapor can produce highly multimode twin beams. When seeded, the process generates arbitrarily-shaped bright twin beams whose intensities are quantum-correlated in time and in space. When operating with a vacuum input, it generates multimode continuous-variable entangled twin beams.

OSA Workshop on Entanglement and Quantum DecoherenceJan 1, 20080 citations

Entangled Images from Four-Wave Mixing

Vincent Boyer, Alberto M. Marino, Raphael C. Pooser +1 more

Two beams of light can be quantum mechanically entangled through correlations of their phase and intensity fluctuations. For a pair of spatially extended image-carrying light fields, the concept of entanglement can be applied not only to the entire images but also to their smaller details. We used a spatially multimode amplifier based on four-wave mixing in a hot vapor to produce twin images that exhibit localized entanglement. The images can be bright fields that display position-dependent quantum noise reduction in their intensity difference or vacuum twin beams that are strongly entangled when projected onto a large range of different spatial modes. The high degree of spatial entanglement demonstrates that the system is an ideal source for parallel continuous-variable quantum information protocols.

ScienceJun 12, 2008676 citations

Delay of Quantum Correlations with an Atomic System

Alberto M. Marino, Raphael C. Pooser, Vincent Boyer +1 more

We use a four-wave mixing process in an atomic system to delay quantum correlations in twin beams. We have obtained a delay of 13 ns without a significant degradation of the intensity-difference squeezing.

International Conference on Quantum InformationJan 1, 20080 citations

Quantum Images from 4-Wave Mixing in Atomic Vapors

Paul D. Lett, Alberto M. Marino, Neil Corzo +1 more

We have used four-wave mixing in hot atomic vapors to generate multi-spatial-mode entangled optical fields. I will review and discuss our recent progress in the construction of phase-sensitive and phase-insensitive amplifiers with this technique.

Research in Optical SciencesJan 1, 20120 citations

Entangling Light in its Spatial Degrees of Freedom with Four‐Wave Mixing in an Atomic Vapor

Vincent Boyer, Alberto M. Marino, Raphael C. Pooser +1 more

Abstract Nonlinearities in atomic vapors allow the production of “entangled images”—beams of light whose transverse light distributions exhibit localized correlations in their unavoidable quantum fluctuations (see picture). These spatially entangled beams may prove useful to reduce the noise in absorption imaging and beam positioning below the quantum noise level, as well as for quantum information applications. magnified image The entanglement properties of two beams of light can reside in subtle correlations that exist in the unavoidable quantum fluctuations of their amplitudes and phases. Recent advances in the generation of nonclassical light with four‐wave mixing in an atomic vapor have permitted the production and the observation of entanglement that is localized in almost arbitrary transverse regions of a pair of beams. These multi‐spatial‐mode entangled beams may prove useful for an array of applications ranging from noise‐free imaging and improved position sensing to quantum information processing.

ChemPhysChemFeb 18, 200911 citations

Self-healing of Spatial Quantum Correlations in Bright Structured Twin Beams

Jerin A. Thachil, Chirang R Patel, Ashok Kumar

We investigate the healing of transverse spatial quantum correlations in trun-cated bright structured twin beams generated via four-wave mixing in atomic vapor, high-lighting their potential for high-dimensional quantum imaging and quantum information processing.

Frontiers in OpticsJan 1, 20250 citations