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Experimental superradiance and slow-light effects for quantum memories

Walther, Andreas LU ; Amari, Atia LU ; Kröll, Stefan LU and Kalachev, A. (2009) In Physical Review A (Atomic, Molecular and Optical Physics) 80(1).
Abstract
The effects of high optical depth phenomena, such as superradiance, are investigated in potential quantum memory materials. The results may have relevance for several schemes, including controlled reversible inhomogeneous broadening, atomic frequency combs, and quantum memories based on electromagnetically induced transparency, which are based on using ensembles as storage media. It is shown that strong superradiant effects manifested as decay rates larger than 1/T*(2) are present even for moderate values of alpha L <= 5 and increases as a function of alpha L. For even higher alpha L, effects such as off-resonant slow light is demonstrated and discussed and, finally, the efficiency of time-reversed optimized input pulses is tested. A... (More)
The effects of high optical depth phenomena, such as superradiance, are investigated in potential quantum memory materials. The results may have relevance for several schemes, including controlled reversible inhomogeneous broadening, atomic frequency combs, and quantum memories based on electromagnetically induced transparency, which are based on using ensembles as storage media. It is shown that strong superradiant effects manifested as decay rates larger than 1/T*(2) are present even for moderate values of alpha L <= 5 and increases as a function of alpha L. For even higher alpha L, effects such as off-resonant slow light is demonstrated and discussed and, finally, the efficiency of time-reversed optimized input pulses is tested. A maximum retrieval efficiency of similar to 20% is reached and agreement with the theoretically expected result is discussed. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review A (Atomic, Molecular and Optical Physics)
volume
80
issue
1
publisher
American Physical Society (APS)
external identifiers
  • wos:000268616900064
  • scopus:69449091727
ISSN
1050-2947
DOI
10.1103/PhysRevA.80.012317
language
English
LU publication?
yes
id
884e970f-46d3-4d20-9ba3-a022131f17ee (old id 1459814)
date added to LUP
2009-08-25 15:42:37
date last changed
2017-10-22 03:38:32
@article{884e970f-46d3-4d20-9ba3-a022131f17ee,
  abstract     = {The effects of high optical depth phenomena, such as superradiance, are investigated in potential quantum memory materials. The results may have relevance for several schemes, including controlled reversible inhomogeneous broadening, atomic frequency combs, and quantum memories based on electromagnetically induced transparency, which are based on using ensembles as storage media. It is shown that strong superradiant effects manifested as decay rates larger than 1/T*(2) are present even for moderate values of alpha L &lt;= 5 and increases as a function of alpha L. For even higher alpha L, effects such as off-resonant slow light is demonstrated and discussed and, finally, the efficiency of time-reversed optimized input pulses is tested. A maximum retrieval efficiency of similar to 20% is reached and agreement with the theoretically expected result is discussed.},
  author       = {Walther, Andreas and Amari, Atia and Kröll, Stefan and Kalachev, A.},
  issn         = {1050-2947},
  language     = {eng},
  number       = {1},
  publisher    = {American Physical Society (APS)},
  series       = {Physical Review A (Atomic, Molecular and Optical Physics)},
  title        = {Experimental superradiance and slow-light effects for quantum memories},
  url          = {http://dx.doi.org/10.1103/PhysRevA.80.012317},
  volume       = {80},
  year         = {2009},
}