Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2003-07-10
Phys. Rev. A 70, 011602(R) (2004)
Physics
Condensed Matter
Soft Condensed Matter
Replaced with final published version
Scientific paper
10.1103/PhysRevA.70.011602
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.
de Oliveira Mendes Cl.
Prataviera G. A.
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