High-performance Raman memory with spatio-temporal reversal

Abstract

A number of techniques exist to use an ensemble of atoms as a quantum memory for light. Many of these propose to use backward retrieval as a way to improve the storage and recall efficiency. We report on a demonstration of an off-resonant Raman memory that uses backward retrieval to achieve an efficiency of $65\pm 6\%$ at a storage time of one pulse duration. The memory has a characteristic decay time of 60 $\mu$s, corresponding to a delay-bandwidth product of $160$.

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Cited by in corpus (4)

• Ultra-low noise quantum memory for quasi-deterministic single photons generated by Rydberg collective atomic excitations
• Single-photon-level light storage in cold atoms using the Autler-Townes splitting protocol
• Time-reversed and coherently-enhanced memory: A single-mode quantum atom-optic memory without a cavity
• Electromagnetically-induced transparency assists the Raman gradient echo memory at moderate detuning, dependent on gradient order