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cond-mat.mes-hall2004
Coherent Backscattering with Nonlinear Atomic Scatterers
T. Wellens, B. Gremaud, D. Delande +1
We study coherent backscattering of a quasi-monochromatic laser by a dilute gas of cold two-level atoms. We consider the perturbative regime of weak intensities, where nonlinear ef…
quant-ph2004
Mechanism and Lineshapes of Sub-Fourier Resonances
Hans Lignier, Jean Claude Garreau, Pascal Szriftgiser +1
Subtle internal interference effects allow quantum-chaotic systems to display "sub-Fourier" resonances, i.e. to distinguish two neighboring driving frequencies in a time shorter th…