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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 6 — Mar. 15, 2009
  • pp: 824–826

Broadband squeezing of quantum noise in a Michelson interferometer with Twin-Signal-Recycling

André Thüring, Christian Gräf, Henning Vahlbruch, Moritz Mehmet, Karsten Danzmann, and Roman Schnabel  »View Author Affiliations


Optics Letters, Vol. 34, Issue 6, pp. 824-826 (2009)
http://dx.doi.org/10.1364/OL.34.000824


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Abstract

Twin-Signal-Recycling (TSR) builds on the resonance doublet of two optically coupled cavities and efficiently enhances the sensitivity of an interferometer at a dedicated signal frequency. We report on what we believe to be the first experimental realization of a TSR Michelson interferometer and also its broadband enhancement by squeezed light injection. The complete setup was stably locked, and a broadband quantum noise reduction of the interferometers shot noise by a factor of up to 4 dB was demonstrated. The system was characterized by measuring its quantum noise spectra for several tunings of the TSR cavities. We found good agreement between the experimental results and numerical simulations.

© 2009 Optical Society of America

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(270.6570) Quantum optics : Squeezed states

ToC Category:
Quantum Optics

History
Original Manuscript: November 14, 2008
Revised Manuscript: January 27, 2009
Manuscript Accepted: January 29, 2009
Published: March 11, 2009

Citation
André Thüring, Christian Gräf, Henning Vahlbruch, Moritz Mehmet, Karsten Danzmann, and Roman Schnabel, "Broadband squeezing of quantum noise in a Michelson interferometer with Twin-Signal-Recycling," Opt. Lett. 34, 824-826 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-6-824


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