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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 45, Iss. 15 — May. 20, 2006
  • pp: 3415–3419

Demonstration and characterization of a detector for minimally destructive detection of Bose condensed atoms in real time

Cristina Figl, Laurent Longchambon, Matthew Jeppesen, Michael Kruger, Hans A. Bachor, Nicholas P. Robins, and John D. Close  »View Author Affiliations


Applied Optics, Vol. 45, Issue 15, pp. 3415-3419 (2006)
http://dx.doi.org/10.1364/AO.45.003415


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Abstract

We present the first detector that is capable of recording high-bandwidth atom number density measurements of a Bose–Einstein condensate, with a readout of the data in real time. It is based on a shot-noise-limited unbalanced Mach–Zehnder interferometer designed for a minimally destructive measurement of the atom column density of a Bose–Einstein condensate. The shot-noise limit is reached by phase modulating the laser in one arm and phase locking the interferometer with a second-color laser. The detector is characterized, and its sensitivity for a fractional change in the column density of a Bose–Einstein condensate is calculated. With this detection system it may be possible to implement feedback to stabilize a Bose–Einstein condensate or an atom laser.

© 2006 Optical Society of America

OCIS Codes
(020.0020) Atomic and molecular physics : Atomic and molecular physics
(110.4280) Imaging systems : Noise in imaging systems
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology

ToC Category:
Atomic and Molecular Physics

History
Original Manuscript: October 20, 2005
Revised Manuscript: January 20, 2006
Manuscript Accepted: January 20, 2006

Citation
Cristina Figl, Laurent Longchambon, Matthew Jeppesen, Michael Kruger, Hans A. Bachor, Nicholas P. Robins, and John D. Close, "Demonstration and characterization of a detector for minimally destructive detection of Bose condensed atoms in real time," Appl. Opt. 45, 3415-3419 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-15-3415

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