Thüring, A., Gräf, C., Vahlbruch, H., Mehmet, M., Danzmann, K. and Schnabel, R. (2009) Broadband squeezing of quantum noise in a Michelson interferometer with twin-signal-recycling. Optics Letters, 34(6), pp. 824-826. (doi: 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.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Graef, Dr Christian |
| Authors: | Thüring, A., Gräf, C., Vahlbruch, H., Mehmet, M., Danzmann, K., and Schnabel, R. |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | Optics Letters |
| Publisher: | Optical Society of America |
| ISSN: | 0146-9592 |
| ISSN (Online): | 1539-4794 |
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