Multimodal Properties and Dynamics of Gradient Echo Quantum Memory

G. Hétet, J. J. Longdell, M. J. Sellars, P. K. Lam, and B. C. Buchler
Phys. Rev. Lett. 101, 203601 – Published 13 November 2008

Abstract

We investigate the properties of a recently proposed gradient echo memory (GEM) scheme for information mapping between optical and atomic systems. We show that GEM can be described by the dynamic formation of polaritons in k space. This picture highlights the flexibility and robustness with regards to the external control of the storage process. Our results also show that, as GEM is a frequency-encoding memory, it can accurately preserve the shape of signals that have large time-bandwidth products, even at moderate optical depths. At higher optical depths, we show that GEM is a high fidelity multimode quantum memory.

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  • Received 25 January 2008

DOI:https://doi.org/10.1103/PhysRevLett.101.203601

©2008 American Physical Society

Authors & Affiliations

G. Hétet1, J. J. Longdell2,3, M. J. Sellars2, P. K. Lam1, and B. C. Buchler2

  • 1ARC COE for Quantum-Atom Optics, Australian National University, Canberra, ACT 0200, Australia
  • 2Laser Physics Centre, RSPhysSE, Australian National University, Canberra, ACT 0200, Australia
  • 3Department of Physics, University of Otago, Dunedin, New Zealand

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Issue

Vol. 101, Iss. 20 — 14 November 2008

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