A multiplexed quantum memory

Opt Express. 2009 Aug 3;17(16):13639-45. doi: 10.1364/oe.17.013639.


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.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Computer Simulation
  • Computer Storage Devices*
  • Computer-Aided Design
  • Equipment Design
  • Equipment Failure Analysis
  • Light
  • Models, Theoretical
  • Optical Devices*
  • Quantum Theory
  • Scattering, Radiation
  • Signal Processing, Computer-Assisted / instrumentation*
  • Telecommunications / instrumentation*