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Gain narrowing in few-atom systems

Authors
  • Savels, Tom
  • Mosk, Allard P.
  • Lagendijk, Ad
Type
Published Article
Publication Date
May 31, 2006
Submission Date
Apr 06, 2006
Identifiers
DOI: 10.1103/PhysRevLett.98.103601
arXiv ID: quant-ph/0604040
Source
arXiv
License
Unknown
External links

Abstract

Using a density matrix approach, we study the simplest systems that display both gain and feedback: clusters of 2 to 5 atoms, one of which is pumped. The other atoms supply feedback through multiple scattering of light. We show that, if the atoms are in each other's near-field, the system exhibits large gain narrowing and spectral mode redistribution. The observed phenomena are more pronounced if the feedback is enhanced. Our system is to our knowledge the simplest exactly solvable microscopic system which shows the approach to laser oscillation.

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