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Title: Quantum interference in absorption and dispersion of a four-level atom in a double-band photonic crystal

Abstract

The probe absorption-dispersion spectrum of a double V-type four-level atom in a double-band photonic crystal is investigated. In the model used, the double V-type transitions are, respectively, coupled by the free vacuum modes and the photonic band gap modes, leading to the two possible types of quantum interference. Three types of zero absorption (transparency) appear in this model. In the first type, there exist two zeroes at the band edge frequencies in the case of isotropic photonic band gap. In the second type, a zero emerges at the middle frequency of two upper levels in the case that the quantum interference takes place in both V-type transitions. Finally, in the third type, a zero occurs at or around the middle frequency of two upper levels in the case that the quantum interference takes place only in the V-type transitions coupled to the free vacuum modes. Ultimately, the probe absorption-dispersion spectrum in the case of the single-band photonic band gap reservoirs compared to those of the double-band photonic band gap reservoirs. The results show that the dispersion property of the system depends on the two types of the quantum interference and the density of states of the photonic band gap reservoir.

Authors:
;  [1]
  1. Research Institute for Applied Physics and Astronomy, Tabriz University, Tabriz (Iran, Islamic Republic of)
Publication Date:
OSTI Identifier:
20982192
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 75; Journal Issue: 2; Other Information: DOI: 10.1103/PhysRevA.75.023816; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ABSORPTION; ATOMS; DENSITY; DISPERSIONS; INTERFERENCE; OPACITY; OPTICS; SPECTRA

Citation Formats

Entezar, Samad Roshan, and Tajalli, Habib. Quantum interference in absorption and dispersion of a four-level atom in a double-band photonic crystal. United States: N. p., 2007. Web. doi:10.1103/PHYSREVA.75.023816.
Entezar, Samad Roshan, & Tajalli, Habib. Quantum interference in absorption and dispersion of a four-level atom in a double-band photonic crystal. United States. doi:10.1103/PHYSREVA.75.023816.
Entezar, Samad Roshan, and Tajalli, Habib. Thu . "Quantum interference in absorption and dispersion of a four-level atom in a double-band photonic crystal". United States. doi:10.1103/PHYSREVA.75.023816.
@article{osti_20982192,
title = {Quantum interference in absorption and dispersion of a four-level atom in a double-band photonic crystal},
author = {Entezar, Samad Roshan and Tajalli, Habib},
abstractNote = {The probe absorption-dispersion spectrum of a double V-type four-level atom in a double-band photonic crystal is investigated. In the model used, the double V-type transitions are, respectively, coupled by the free vacuum modes and the photonic band gap modes, leading to the two possible types of quantum interference. Three types of zero absorption (transparency) appear in this model. In the first type, there exist two zeroes at the band edge frequencies in the case of isotropic photonic band gap. In the second type, a zero emerges at the middle frequency of two upper levels in the case that the quantum interference takes place in both V-type transitions. Finally, in the third type, a zero occurs at or around the middle frequency of two upper levels in the case that the quantum interference takes place only in the V-type transitions coupled to the free vacuum modes. Ultimately, the probe absorption-dispersion spectrum in the case of the single-band photonic band gap reservoirs compared to those of the double-band photonic band gap reservoirs. The results show that the dispersion property of the system depends on the two types of the quantum interference and the density of states of the photonic band gap reservoir.},
doi = {10.1103/PHYSREVA.75.023816},
journal = {Physical Review. A},
number = 2,
volume = 75,
place = {United States},
year = {Thu Feb 15 00:00:00 EST 2007},
month = {Thu Feb 15 00:00:00 EST 2007}
}