Tuesday, August 7, 2012

1208.0969 (T. Tufarelli et al.)

Dynamics of spontaneous emission in a single-end photonic waveguide    [PDF]

T. Tufarelli, F. Ciccarello, M. S. Kim

We investigate the spontaneous emission of a two-level system, e.g. an atom or atomlike object, coupled to a single-end, i.e., semi-infinite, one-dimensional photonic waveguide such that one end behaves as a perfect mirror while light can pass through the opposite end with no back-reflection. Through a quantum microscopic model we show that such geometry can cause non-exponential and long-lived atomic decay. Under suitable conditions, a bound atom-photon stationary state appears in the atom-mirror interspace so as to trap a considerable amount of initial atomic excitation. Yet, this can be released by applying an atomic frequency shift causing a revival of photon emission. The resilience of such effects to typical detrimental factors is analyzed.
View original: http://arxiv.org/abs/1208.0969

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