Phys. Rev. A 57, 5019–5022 (1998)Trapped photon state along an atomic chain in photonic band-gap crystalsReceived 2 October 1997; published in the issue dated June 1998 When a chain of two two-level atoms is placed in a photonic band-gap crystal, trapped photon-atom dressed states can form in the neighborhood of the chain due to emission and reabsorption of the photon by atoms in the chain. For a long chain such states form a quasicontinuum inside the forbidden frequency band. We examine the density of states as a function of the chain length and separation between atoms. The pattern of excitation for atoms in the chain forms a “lattice wave,” which may be used to understand the propagation of excitation along the chain. © 1998 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.57.5019
DOI:
10.1103/PhysRevA.57.5019
PACS:
42.50.Gy, 32.80.Bx
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