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Beyond single-photon localization at the edge of a Photonic Band Gap

Georgios M. Nikolopoulos·P. Lambropoulos
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Abstract

We study spontaneous emission in an atomic ladder system, with both transitions coupled near-resonantly to the edge of a photonic band gap continuum. The problem is solved through a recently developed technique and leads to the formation of a ``two-photon+atom'' bound state with fractional population trapping in both upper states. In the long-time limit, the atom can be found excited in a superposition of the upper states and a ``direct'' two-photon process coexists with the stepwise one. The sensitivity of the effect to the particular form of the density of states is also explored.

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Georgios M. Nikolopoulos, P. Lambropoulos. 2000-02-18. Beyond single-photon localization at the edge of a Photonic Band Gap. https://doi.org/10.1103/physreva.61.053812

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