Influence of interference effects of spontaneous emission on the behavior and spectra of resonance fluorescence of a three-level atom in a strong wave field

2000 ◽  
Vol 90 (1) ◽  
pp. 50-58 ◽  
Author(s):  
A. A. Panteleev ◽  
Vl. K. Rerikh ◽  
A. N. Starostin
Keyword(s):  
Wave Field ◽  
Spontaneous Emission ◽  
Resonance Fluorescence ◽  
Interference Effects ◽  
Strong Wave ◽  
Level Atom

Spontaneous emission inhibition from a driven four-level atom in a photonic band gap material

2007 ◽  
Vol 85 (9) ◽  
pp. 981-994
Author(s):  
H Zhang ◽  
G Q Liu ◽  
H Z Zhang
Keyword(s):  
Band Gap ◽  
Spontaneous Emission ◽  
Quantum Interference ◽  
Photonic Band Gap ◽  
Coupling Model ◽  
Interference Effects ◽  
Level Atom ◽  
Photonic Band Gap Material ◽  
First Time ◽  
Photonic Band

Two models (an upper levels coupling model and a lower levels coupling model) of a four-level atom embedded in a double-band photonic crystal are adopted. The effect of spontaneous emission cancellation of such systems embedded in different reservoirs are investigated. Especially, the "trapping conditions" of such systems in photonic band gap (PBG) reservoirs are discussed for the first time. We also investigate the different quantum interference effects of the lower levels coupling model embedded in an isotropic PBG reservoir. It is interesting that when the trapping conditions are fulfilled, the additional peaks, which result from the contribution of the additional singularities of Laplace transform of the delayed Green function of the isotropic PBG modes, are eliminated.PACS Nos.: 42.50.Gy, 42.50.Ct, 42.70.Qs

Interference effects in the resonance fluorescence of a three-level atom at high proton densities

1980 ◽  
Vol 58 (7) ◽  
pp. 957-963 ◽  
Author(s):  
Constantine Mavroyannis
Keyword(s):  
Excitation Spectrum ◽  
Beat Frequency ◽  
Low Frequency ◽  
Delta Function ◽  
Resonance Fluorescence ◽  
Interference Effects ◽  
Lorentzian Line ◽  
Level Atom ◽  
Upper Level ◽  
The Stability

A theory on interference effects at high photon densities has been developed for two types of a single three-level atom for which transitions occur: (i) from two different upper levels to a common lower one and (ii) from a common upper level to two different lower levels. The excitation spectrum for the interference effects for the two types of atoms results from the symmetric and antisymmetric interference between the two electronic transitions of the system, respectively. The spectral function for the symmetric modes consists of three Lorentzian lines peaked at the frequencies ω = Δ and ω = Δ ± Ω and having spectral widths of the order of γ0 and 3γ0/4, respectively, where Δ is the beat frequency, Ω is the Rabi frequency, and γ0/2 is equal to the natural linewidth for a photon spontaneously emitted from an isolated atom. The antisy mmetric spectrum consists of the peak of ω = Δ, which has a delta-function distribution indicating the stability of the mode in question, and two Lorentzian lines peaked at ω = Δ ± Ω with radiative widths of the order of γ0/2. The excitation spectrum of each type of atom contains also a Lorentzian line describing the very low frequency mode of the system, respectively.

scholarly journals Enhancement and suppression of the spontaneous emission of a two-level atom in a photonic crystal with a state-conservative photonic pseudogap

2004 ◽  
Vol 53 (1) ◽  
pp. 125
Author(s):  
Liu Xiao-Dong ◽  
Wang Yi-Quan ◽  
Xu Xing-Sheng ◽  
Cheng Bing-Ying ◽  
Zhang Dao-Zhong
Keyword(s):  
Photonic Crystal ◽  
Spontaneous Emission ◽  
Level Atom
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