Quantum near-field effects and spontaneous decay

Sergey V. Sukhov

doi:10.1117/12.447959

15 November 2001 Quantum near-field effects and spontaneous decay

Sergey V. Sukhov

Proceedings Volume 4605, PECS 2001: Photon Echo and Coherent Spectroscopy; (2001) https://doi.org/10.1117/12.447959
Event: PECS'2001: Photon Echo and Coherent Spectroscopy, 2001, Novgorod, Russian Federation

Abstract

In the frames of quantum electrodynamics, the behavior of spontaneous decay is investigated for a single two-level atom embedded into a microscopic object (cluster). The transition frequency of cluster atoms is supposed to be considerably detuned from the transition frequency of decaying atom. The consideration is performed on the base of fully microscopic quantum-electrodynamical approach with simultaneous solution of Heisenberg equations for atomic and quantum field operators. The special attention is paid to the investigation of renormalization of spontaneous emission rate due to proper account of discrete structure of medium. The formula for decay rate is obtained without using the notion of refractive index. It is obtained that spontaneous decay strongly depends on the geometrical arrangement of atoms in microstructure. For some form of clusters, decay rate is found to be considerably large compared to its vacuum value that is not the case for macroscopically large dielectrics.

Citation Download Citation

Sergey V. Sukhov "Quantum near-field effects and spontaneous decay", Proc. SPIE 4605, PECS 2001: Photon Echo and Coherent Spectroscopy, (15 November 2001); https://doi.org/10.1117/12.447959

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