TY - JOUR
T1 - Spontaneous emission spectrum of a two-level atom in a very-high- Q cavity
AU - Auffèves, Alexia
AU - Besga, Benjamin
AU - Gérard, Jean Michel
AU - Poizat, Jean Philippe
PY - 2008/6/25
Y1 - 2008/6/25
N2 - In this paper we consider an initially excited two-level system coupled to a monomode cavity, and compute exact expressions for the spectra spontaneously emitted by each system in the general case where they have arbitrary linewidths and frequencies. Our method is based on the fact that this problem has an easily solvable classical counterpart, which provides a clear interpretation of the evidenced phenomena. We show that if the cavity linewidth is much lower than the atomic linewidth, photons are emitted at the cavity frequency, even if the atom and the cavity are strongly detuned. We also study the links between the spontaneous emission spectra and the fluorescence spectra emitted when the atom is driven by a classical field of tunable frequency in the low excitation limit.
AB - In this paper we consider an initially excited two-level system coupled to a monomode cavity, and compute exact expressions for the spectra spontaneously emitted by each system in the general case where they have arbitrary linewidths and frequencies. Our method is based on the fact that this problem has an easily solvable classical counterpart, which provides a clear interpretation of the evidenced phenomena. We show that if the cavity linewidth is much lower than the atomic linewidth, photons are emitted at the cavity frequency, even if the atom and the cavity are strongly detuned. We also study the links between the spontaneous emission spectra and the fluorescence spectra emitted when the atom is driven by a classical field of tunable frequency in the low excitation limit.
UR - http://www.scopus.com/inward/record.url?scp=46149125954&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.77.063833
DO - 10.1103/PhysRevA.77.063833
M3 - Article
AN - SCOPUS:46149125954
VL - 77
JO - Physical Review A: covering atomic, molecular, and optical physics and quantum information
JF - Physical Review A: covering atomic, molecular, and optical physics and quantum information
SN - 2469-9926
IS - 6
M1 - 063833
ER -