Storage of orbital angular momenta of light via coherent population oscillation

Abstract

We report on the storage of Orbital Angular Momentum (OAM) of light via the phenomenon of Coherent Population Oscillation (CPO) in cold cesium atoms. The experiment is performed using a delayed four wave mixing configuration where the transverse optical information of a probe field carrying OAM associated with its azimuthal phase dependence is stored in the CPO of Zeeman sublevels of the hyperfine transition $F=3\to F^{\prime }=2$ of cesium $D_2$ line. We also demonstrate experimentally the simultaneous storage and retrieval of different OAM states propagating along different directions in space, leading to algebric operations with OAM and therefore opening the possibility of multiplexing OAM states.

4 pages, 4 figures

References in corpus (5)

• Collapses and revivals of stored orbital angular momentum of light in a cold atomic ensemble
• A reversible optical memory for twisted photons
• Light storage via coherent population oscillation in a thermal cesium vapor
• Off-axis retrieval of orbital angular momentum of light stored in cold atoms
• Topological stability of stored optical vortices

Cited by in corpus (6)

• High Helicity Vortex Conversion in a Rubidium Vapor
• Coherent population oscillations with nitrogen-vacancy color centers in diamond
• Coherent Population Oscillation-Based Light Storage
• Nonvolatile optical memory via recoil-induced resonance in a pure two-level system
• Magnetically tuned, robust and efficient filtering system for spatially multimode quantum memory in warm atomic vapors
• Quantum properties of light propagating in a Coherent Population Oscillation Storage Medium