Transverse Mode Revival of a Light-Compensated Quantum Memory

Abstract

A long-lived quantum memory was developed based on light-compensated cold ${}^{87}$Rb atoms in a dipole trap. The lifetime of the quantum memory was improved by 40 folds, from 0.67 ms to 28 ms with the help of a compensation laser beam. Oscillations of the memory efficiency due to the transverse mode breathing of the singly-excited spin wave have been clearly observed and clarified with a Monte-Carlo simulation procedure. With detailed analysis of the decoherence processes of the spin wave in cold atomic ensembles, this experiment provides a benchmark for the further development of high-quality quantum memories.

4 pages, 4 figures

References in corpus (9)

• The Quantum Internet
• Experimental demonstration of quantum memory for light
• Experimental demonstration of a BDCZ quantum repeater node
• High efficiency coherent optical memory with warm rubidium vapour
• Multiplexed Memory-Insensitive Quantum Repeaters
• A millisecond quantum memory for scalable quantum networks
• Remote preparation of an atomic quantum memory
• Interfacing Collective Atomic Excitations and Single Photons
• A fast and robust approach to long-distance quantum communication with atomic ensembles

Cited by in corpus (4)

• An efficient quantum light-matter interface with sub-second lifetime
• Ultraslow Optical Solitons and Their Storage and Retrieval in an Ultracold Ladder-Type Atomic System
• Witnessing trustworthy single-photon entanglement with local homodyne measurements
• Dark-time decay of the retrieval efficiency of light stored as a Rydberg excitation in a noninteracting ultracold gas