Phys. Rev. A 68, 041801(R) (2003) [4 pages]Low-light-level nonlinear optics with slow light
Electromagnetically induced transparency in an optically thick, cold medium creates a unique system where pulse-propagation velocities may be orders of magnitude less than c and optical nonlinearities become exceedingly large. As a result, nonlinear processes may be efficient at low-light levels. Using an atomic system with three, independent channels, we demonstrate a quantum interference switch where a laser pulse with an energy per area of ∼23 photons per λ2/(2π) causes a 1/e absorption of a second pulse. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.68.041801
DOI:
10.1103/PhysRevA.68.041801
PACS:
42.50.Gy, 32.80.Pj, 42.65.An
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