Physics – Quantum Physics
Scientific paper
2006-03-09
Phys. Rev. A 73, 063814 (2006)
Physics
Quantum Physics
Scientific paper
10.1103/PhysRevA.73.063814
The fluorescence light emitted by a 4-level system in $J=1/2$ to $J=1/2$ configuration driven by a monochromatic laser field and in an external magnetic field is studied. We show that the spectrum of resonance fluorescence emitted on the $\pi$ transitions shows a signature of spontaneously generated interference effects. The degree of interference in the fluorescence spectrum can be controlled by means of the external magnetic field, provided that the Land\'e g-factors of the excited and the ground state doublet are different. For a suitably chosen magnetic field strength, the relative weight of the Rayleigh line can be completely suppressed, even for low intensities of the coherent driving field. The incoherent fluorescence spectrum emitted on the $\pi$ transitions exhibits a very narrow peak whose width and weight depends on the magnetic field strength. We demonstrate that the spectrum of resonance fluorescence emitted on the $\sigma$ transitions show an indirect signature of interference. A measurement of the relative peak heights in the spectrum from the $\sigma$ transitions allows to determine the branching ratio of the spontaneous decay of each excited state into the $\sigma$ channel.
Evers Joerg
Keitel Christoph H.
Kiffner Martin
No associations
LandOfFree
Interference in the resonance fluorescence of two incoherently coupled transitions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Interference in the resonance fluorescence of two incoherently coupled transitions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interference in the resonance fluorescence of two incoherently coupled transitions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-711923