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

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

2010-05-25

arxiv.org/abs/1005.4650v1

Optics Letters, Vol. 34, Issue 6, pp. 824-826 (2009)

Physics

Quantum Physics

Scientific paper

10.1364/OL.34.000824

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 the first experimental realization of a Twin-Signal-Recycling 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.

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