Observation of absorptive photon switching by quantum interference Article

cited authors

  • Yan, M; Rickey, EG; Zhu, Y

fiu authors


  • We report an experimental demonstration of photon switching by quantum interference in a four-level atomic system proposed by Harris and Yamamoto [Phys. Rev. Lett. 81, 3611 (1998)]. Quantum interference inhibits single-photon absorption but enhances third-order, two-photon-type absorption in the four-level system. We have observed greatly enhanced nonlinear absorption in the four-level system realized with cold [Formula Presented] atoms and demonstrated fast switching of the nonlinear absorption with a pulsed pump laser. © 2001 The American Physical Society.

publication date

  • January 1, 2001

Digital Object Identifier (DOI)

start page

  • 4


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