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Continuous Measurement of Atom-Number Moments of a Bose-Einstein Condensate by Photodetection

G. A. Prataviera·M. C. de Oliveira
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Abstract

We propose a measurement scheme that allows determination of even-moments of a Bose-Einstein condensate (BEC) atom number, in a ring cavity, by continuous photodetection of an off-resonant quantized optical field. A fast cavity photocounting process limits the heating of atomic samples with a relatively small number of atoms, being convenient for BECs on a microchip scale applications. The measurement back-action introduces a counting-conditioned phase damping, suppressing the condensate typical collapse and revival dynamics.

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G. A. Prataviera, M. C. de Oliveira. 2004-07-20. Continuous Measurement of Atom-Number Moments of a Bose-Einstein Condensate by Photodetection. https://doi.org/10.1103/physreva.70.011602

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