Quantum Limit for Laser Interferometric Gravitational-Wave Detectors from Optical Dissipation
We derive a quantum limit to the sensitivity of laser interferometric gravitational-wave detectors from optical-loss-induced dissipation, analogous to the sensitivity limit from the mechanical dissipation. It applies universally to different interferometer configurations and cannot be surpassed unless the optical properties of the interferometer are improved. This result provides an answer to the long-standing question of how far we can push the detector sensitivity given the state-of-the-art optics.
© 2019 The Author(s). Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. (Received 2 August 2018; revised manuscript received 1 January 2019; published 26 March 2019) We would like to thank Rana Adhikari, Lisa Barsotti, Yanbei Chen, Stefan Danilishin, Jan Harms, Farid Khalili, Mikhail Korobko, Yiqiu Ma, Denis Martynov, as well as members of the LSC AIC and QN groups for fruitful discussions. H. M. is supported by UK STFC Ernest Rutherford Fellowship (Grant No. ST/M005844/11). M. E. acknowledges the support of the National Science Foundation and the LIGO Laboratory. 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 No. PHY-0757058.
Accepted Version - 1807.11734.pdf
Published - PhysRevX.9.011053.pdf