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

authored by

André Thüring, Christian Gräf, Henning Vahlbruch, Moritz Mehmet, Karsten Danzmann, Roman Schnabel

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.

Organisation(s)

Institute of Gravitation Physics

External Organisation(s)

Max Planck Institute for Gravitational Physics (Albert Einstein Institute)

Type

Article

Journal

Optics letters

Volume

34

Pages

824-826

No. of pages

3

ISSN

0146-9592

Publication date

15.03.2009

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

Electronic version(s)

https://doi.org/10.1364/OL.34.000824 (Access: Closed)
http://hdl.handle.net/11858/00-001M-0000-0013-45D3-B (Access: Open)