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Rapid coherent optical modulation of atomic momenta via pseudoresonances

Papoff, F. and Robb, G. R. M. (2012) Rapid coherent optical modulation of atomic momenta via pseudoresonances. Physical Review Letters, 108 (11). ISSN 0031-9007

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Abstract

We show that modulation of an optical field injected into a cavity containing a dilute Bose-Einstein condensate is transformed into a modulation of the population of the atomic momentum states due to pseudoresonances of the resolvent which describes the linearized evolution of the atom-cavity system. This effect is related to the way the atomic momentum states and the cavity optical field are dynamically coupled. The results presented offer new possibilities for rapid modulation of atomic momentum state populations up to 3 orders of magnitude faster than modulation of magnetic trapping potentials.