Multimode cavity-assisted quantum storage via continuous phase matching control

TL;DR

This paper proposes a cavity-assisted quantum memory scheme that enables storage and retrieval of spatial-temporal multimode quantum signals using off-resonant Raman interactions with angular modulation, applicable to solid-state materials.

Contribution

It introduces a novel multimode quantum memory method utilizing continuous phase matching control via cavity-assisted off-resonant Raman interactions in an extended atomic ensemble.

Findings

Multimode storage achieved through spatial-temporal structure manipulation.

Effective storage when Raman coherence involves wave vectors with different longitudinal components.

Potential implementation in solid-state materials discussed.

Abstract

A scheme for spatial multimode quantum memory is developed such that spatial-temporal structure of a weak signal pulse can be stored and recalled via cavity-assisted off-resonant Raman interaction with a strong angular-modulated control field in an extended $\Lambda$-type atomic ensemble. It is shown that effective multimode storage is possible when the Raman coherence spatial grating involves wave vectors with different longitudinal components relative to the paraxial signal field. The possibilities of implementing the scheme in the solid-state materials are discussed.