Storing vector-vortex states of light in intra-atomic frequency comb

TL;DR

This paper proposes a method to store vector-vortex states of light in atomic ensembles using intra-atomic frequency combs, enabling efficient quantum memory for complex photon states in quantum communication.

Contribution

It introduces a novel approach for storing vector-vortex light states in atomic frequency combs, demonstrating feasibility with Cs and Rb atoms.

Findings

Atomic ensembles with two intra-atomic frequency combs can store vector-vortex states.

Cs and Rb atoms are suitable candidates for this quantum memory.

The method offers robust and efficient storage of complex photon states.

Abstract

Photons are one of the prominent candidates for long-distance quantum communication and quantum information processing. Certain quantum information processing tasks require storage and faithful retrieval of single photons preserving the internal states of the photons. Here we propose a method to store the vector-vortex states of light in the intra-atomic frequency comb based quantum memory. We show that an atomic ensemble with two intra-atomic frequency combs corresponding to $\Delta m = \pm1$ transitions of similar frequency are sufficient for a robust and efficient quantum memory for vector-vortex states of light. As an example, we show that the Cs and Rb atoms are good candidates for storing these internal modes of light.