Photon echoes generated by reversing magnetic field gradients in a rubidium vapor
Optics Letters, Vol. 33, Issue 20, pp. 2323-2325 doi:10.1364/OL.33.002323
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- OCIS Codes:
- (270.1670) Quantum optics : Coherent optical effects
- (270.5585) Quantum optics : Quantum information and processing
Quantum Optics
Citation
G. Hétet, M. Hosseini, B. M. Sparkes, D. Oblak, P. K. Lam, and B. C. Buchler, "Photon echoes generated by reversing magnetic field gradients in a rubidium vapor," Opt. Lett. 33, 2323-2325 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-20-2323
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We propose a photon echo quantum memory scheme using detuned Raman coupling to long-lived ground states. In contrast to previous three-level schemes based on controlled reversible inhomogeneous broadening that use sequences of π pulses, the scheme does not require accurate control of the coupling dynamics to the ground states. We present a proof-of-principle experimental realization of our proposal using rubidium atoms in a warm vapor cell. The Raman resonance line is broadened using a magnetic field that varies linearly along the direction of light propagation. Inverting the magnetic field gradient rephases the atomic dipoles and re-emits the light pulse in the forward direction.
© 2008 Optical Society of America
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History
Original Manuscript: June 27, 2008
Manuscript Accepted: July 24, 2008
Published: October 10, 2008
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Author Affiliations
The Australian National University
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