Second quantization and atomic spontaneous emission inside one-dimensional photonic crystals via a quasinormal-modes approach.
An extension of the second quantization scheme based on the quasinormal-modes theory to one-dimensional photonic band gap (PBG) structures is discussed. Such structures, treated as double open optical cavities, are studied as part of a compound closed system including the electromagnetic radiative external bath. The electromagnetic field inside the photonic crystal is successfully represented by a new class of modes called quasinormal modes. Starting from this representation we introduce the Feynman's propagator to calculate the decay rate of a dipole inside a PBG structure, related to the density of modes, in the presence of the vacuum fluctuations outside the one-dimensional cavity.
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INFM at Dipartimento di Energetica, Università La Sapienza di Roma, Via Scarpa 16, 00161, Roma, Italy.
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Bertolotti
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