Quantum interference between decay channels of a three-level atom in a multilayer dielectric medium

Gao xiang Li, Fu li Li, Shi Yao ZHU

Research output: Contribution to journalArticlepeer-review

78 Citations (Scopus)

Abstract

Spontaneous emission of an atom with two close upper levels and one lower level in a multilayer dielectric medium, and quantum interference between transitions from the upper levels to the lower one, are considered. Since the medium is inhomogeneous along the direction normal to the interfaces of the dielectric layers, the vacuum has an anisotropic spatial structure, and quantum intereference between the two decay channels can appear even if the two dipole matrix elements are orthogonal to each other. If the atom is placed in a three-layer dielectric plate cavity, a strong quantum interference similar to that for an atom with two nearly parallel dipole moments in free space arises due to the influence of anisotropic vacuum. Putting the atom in a three-layer dielectric waveguide and a one-dimensional photonic crystal, there appears a strong quantum interference similar to that for an atom with nearly antiparallel dipole moments.

Original languageEnglish
Article number013819
JournalPhysical Review A
Volume64
Issue number1
DOIs
Publication statusPublished - Jun 2001

Scopus Subject Areas

  • Atomic and Molecular Physics, and Optics

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