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Dynamics of spontaneous emission in a single-end photonic waveguide (Articolo in rivista)

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Dynamics of spontaneous emission in a single-end photonic waveguide (Articolo in rivista) (literal)

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Alternative label

Tufarelli T. [ 1 ] ; Ciccarello F. [ 2,3,4 ] ; Kim M. S. [ 1 ] (2013)
Dynamics of spontaneous emission in a single-end photonic waveguide
in Physical review. A; AMER CHEMICAL SOC, WASHINGTON (Stati Uniti d'America)
(literal)

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[ 1 ] Imperial Coll London, Blackett Lab, QOLS, London SW7 2BW, England [ 2 ] Scuola Normale Super Pisa, I-56126 Pisa, Italy [ 3 ] Univ Palermo, Ist Nanosci CNR, NEST, I-90123 Palermo, Italy [ 4 ] Univ Palermo, Dipartimento Fis, I-90123 Palermo, Italy (literal)

Titolo

Abstract

We investigate the spontaneous emission of a two-level system, e. g., an atom or atomlike object, coupled to a single-end, i.e., a 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 backreflection. Through a quantum microscopic model we show that such geometry can cause nonexponential 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. (literal)

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