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Optics Letters

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  • Editor: Anthony J. Campilo
  • Vol. 32, Iss. 17 — Sep. 1, 2007
  • pp: 2502–2504

Multiple frequency modulation for low-light atom measurements in an optical cavity

R. Long, A. K. Tuchman, and M. A. Kasevich  »View Author Affiliations


Optics Letters, Vol. 32, Issue 17, pp. 2502-2504 (2007)
http://dx.doi.org/10.1364/OL.32.002502


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Abstract

We present a frequency modulation scheme to detect atoms dispersively in a high-finesse optical cavity at low-light levels with immunity to cavity length fluctuations. We use multiple cavity resonances to provide common mode noise rejection, keeping the high intensity carrier off-resonant from all cavity modes. The method has applications in atomic squeezed state generation and quantum metrology.

© 2007 Optical Society of America

OCIS Codes
(020.0020) Atomic and molecular physics : Atomic and molecular physics
(120.3940) Instrumentation, measurement, and metrology : Metrology
(140.4780) Lasers and laser optics : Optical resonators
(300.6260) Spectroscopy : Spectroscopy, diode lasers

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: July 2, 2007
Revised Manuscript: July 2, 2007
Manuscript Accepted: July 2, 2007
Published: August 17, 2007

Citation
R. Long, A. K. Tuchman, and M. A. Kasevich, "Multiple frequency modulation for low-light atom measurements in an optical cavity," Opt. Lett. 32, 2502-2504 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-17-2502


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References

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  9. Cavity FSR and microwave fluctuations have each been measured at <10Hz rms, whereas atomic shot noise for 105 atoms and Δ=1GHz, is ∼600Hz rms.
  10. Since the difference in rf frequencies is likely to be in the audiofrequency range, this essentially eliminates rf noise from the equation.
  11. A. Schoof, J. Grunert, S. Ritter, and A. Hemmerich, Opt. Lett. 26, 1562 (2001). [CrossRef]

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