Measurement of atomic motion in a standing light field by homodyne detection

  • Quadt R
  • Collett M
  • Walls D
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{I}t is shown that the photocurrent measured using homodyne detection
of the phase quadrature on the output field of a cavity gives information
about the transverse motion of an atom passing through the standing
light field inside the cavity. {M}onte {C}arlo simulation techniques
are used which result in quantum trajectories of the system conditioned
on the measured photocurrent, i.e., the photocurrent defines the
backaction of the continuous measurement on the atomic motion.

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  • Ralf Quadt

  • Matthew Collett

  • Dan F. Walls

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