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Updated: Jun 21, 2026

Gradient Echo Quantum Memory in Warm Atomic Vapor
Published on: November 11, 2013
A multiplexed quantum memory
S-Y Lan1, A G Radnaev, O A Collins
11School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332-0430, USA.
Abstract:
A quantum repeater is a system for long-distance quantum communication that employs quantum memory elements to mitigate optical fiber transmission losses. The multiplexed quantum memory (O. A. Collins, S. D. Jenkins, A. Kuzmich, and T. A. B. Kennedy, Phys. Rev. Lett. 98, 060502 (2007)) has been shown theoretically to reduce quantum memory time requirements. We present an initial implementation of a multiplexed quantum memory element in a cold rubidium gas. We show that it is possible to create atomic excitations in arbitrary memory element pairs and demonstrate the violation of Bell's inequality for light fields generated during the write and read processes.
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