Storage and Manipulation of Light Using a Raman Gradient Echo Process

Abstract

The Gradient Echo Memory (GEM) scheme has potential to be a suitable protocol for storage and retrieval of optical quantum information. In this paper, we review the properties of the $\Lambda$-GEM method that stores information in the ground states of three-level atomic ensembles via Raman coupling. The scheme is versatile in that it can store and re-sequence multiple pulses of light. To date, this scheme has been implemented using warm rubidium gas cells. There are different phenomena that can influence the performance of these atomic systems. We investigate the impact of atomic motion and four-wave mixing and present experiments that show how parasitic four-wave mixing can be mitigated. We also use the memory to demonstrate preservation of pulse shape and the backward retrieval of pulses.

26 pages, 13 figures

References in corpus (11)

• Stationary pulses of light in an atomic medium
• Quantum Storage of Photonic Entanglement in a Crystal
• Unconditional Room Temperature Quantum Memory
• Quantum memory for entangled two-mode squeezed states
• Ultraslow propagation of matched pulses by four-wave mixing in an atomic vapor
• Analysis of a quantum memory for photons based on controlled reversible inhomogeneous broadening
• Optimal light storage in atomic vapor
• Stationary Light Pulses without Bragg Gratings
• Stationary Light Pulses in Cold Atomic Media
• Photon echoes generated by reversing magnetic field gradients in a rubidium vapour
• Multi-Modal Properties and Dynamics of the Gradient Echo Quantum Memory

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• Quantum optical memory protocols in atomic ensembles
• Dynamical Observations of Self-Stabilising Stationary Light
• Experimental implementation of the optical fractional Fourier transform in the time-frequency domain
• Polariton Exchange Interactions in Multichannel Optical Networks
• Scalable time reversal of Raman echo quantum memory and quantum waveform conversion of light pulse
• Quantum benchmarking with realistic states of light
• Four wave mixing based generation and control of light pulse
• A mirrorless spinwave resonator
• Adiabatic passage in photon-echo quantum memories
• Spatially Addressable Readout and Erasure of an Image in a Gradient Echo Memory
• Efficient and reversible optical-to-spin conversion for solid-state quantum memories
• Robustness of intra-atomic frequency comb based quantum memory against fluctuating environment