Squeezing in Gravitational Wave Detectors

Creators: Dwyer, Sheila E.; Mansell, Georgia L.; McCuller, Lee

Abstract

Injecting optical squeezed states of light, a technique known as squeezing, is now a tool for gravitational wave detection. Its ability to reduce quantum noise is helping to reveal more gravitational wave transients, expanding the catalog of observations in the last observing run. This review introduces squeezing and its history in the context of gravitational-wave detectors. It overviews the benefits, limitations and methods of incorporating squeezing into advanced interferometers, emphasizing the most relevant details for astrophysics instrumentation.

Additional Information

© 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Received: 11 January 2022 / Revised: 19 February 2022 / Accepted: 23 February 2022 / Published: 9 March 2022. (This article belongs to the Special Issue Present and Future of Gravitational Wave Astronomy) LIGO was constructed by the California Institute of Technology and Massachusetts Institute of Technology with funding from the National Science Foundation, and operates under Cooperative Agreement Grant No. PHY-1764464. Advanced LIGO was built under Grant No. PHY- 0823459. A+ LIGO is being constructed under Grant PHY-1834382. Institutional Review Board Statement: Not applicable. Informed Consent Statement: Not applicable. Data Availability Statement: Not applicable. The authors declare no conflict of interest.

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