LIGOs Quantum Response to Squeezed States
Abstract
Gravitational Wave interferometers achieve their profound sensitivity by combining a Michelson interferometer with optical cavities, suspended masses, and now, squeezed quantum states of light. These states modify the measurement process of the LIGO, VIRGO and GEO600 interferometers to reduce the quantum noise that masks astrophysical signals; thus, improvements to squeezing are essential to further expand our gravitational view of the universe. Further reducing quantum noise will require both lowering decoherence from losses as well more sophisticated manipulations to counter the quantum back-action from radiation pressure. Both tasks require fully understanding the physical interactions between squeezed light and the many components of km-scale interferometers. To this end, data from both LIGO observatories in observing run three are expressed using frequency-dependent metrics to analyze each detector's quantum response to squeezed states. The response metrics are derived and used to concisely describe physical mechanisms behind squeezing's simultaneous interaction with transverse-mode selective optical cavities and the quantum radiation pressure noise of suspended mirrors. These metrics and related analysis are broadly applicable for cavity-enhanced optomechanics experiments that incorporate external squeezing, and -- for the first time -- give physical descriptions of every feature so far observed in the quantum noise of the LIGO detectors.
Cite
@article{arxiv.2105.12052,
title = {LIGOs Quantum Response to Squeezed States},
author = {L. McCuller and S. E. Dwyer and A. C. Green and Haocun Yu and L. Barsotti and C. D. Blair and D. D. Brown and A. Effler and M. Evans and A. Fernandez-Galiana and P. Fritschel and V. V. Frolov and N. Kijbunchoo and G. L. Mansell and F. Matichard and N. Mavalvala and D. E. McClelland and T. McRae and A. Mullavey and D. Sigg and B. J. J. Slagmolen and M. Tse and T. Vo and R. L. Ward and C. Whittle and R. Abbott and C. Adams and R. X. Adhikari and A. Ananyeva and S. Appert and K. Arai and J. S. Areeda and Y. Asali and 0 S. M. Aston and C. Austin and A. M. Baer and M. Ball and S. W. Ballmer and S. Banagiri and D. Barker and J. Bartlett and B. K. Berger and J. Betzwieser and D. Bhattacharjee and G. Billingsley and S. Biscans and R. M. Blair and N. Bode and P. Booker and R. Bork and A. Bramley and A. F. Brooks and A. Buikema and C. Cahillane and K. C. Cannon and X. Chen and 0 A. A. Ciobanu and F. Clara and C. M. Compton and S. J. Cooper and K. R. Corley and 0 S. T. Countryman and 0 P. B. Covas and D. C. Coyne and L. E. H. Datrier and D. Davis and C. Di Fronzo and K. L. Dooley and J. C. Driggers and T. Etzel and T. M. Evans and J. Feicht and P. Fulda and M. Fyffe and J. A. Giaime and K. D. Giardina and P. Godwin and E. Goetz and S. Gras and C. Gray and R. Gray and E. K. Gustafson and R. Gustafson and J. Hanks and J. Hanson and T. Hardwick and R. K. Hasskew and M. C. Heintze and A. F. Helmling-Cornell and N. A. Holland and J. D. Jones and S. Kandhasamy and S. Karki and M. Kasprzack and K. Kawabe and P. J. King and J. S. Kissel and Rahul Kumar and M. Landry and B. B. Lane and B. Lantz and M. Laxen and Y. K. Lecoeuche and J. Leviton and J. Liu and M. Lormand and A. P. Lundgren and 0 R. Macas and M. MacInnis and D. M. Macleod and S. Marka and 0 Z. Marka and 0 D. V. Martynov and K. Mason and T. J. Massinger and R. McCarthy and S. McCormick and J. McIver and G. Mendell and K. Merfeld and E. L. Merilh and F. Meylahn and T. Mistry and R. Mittleman and G. Moreno and C. M. Mow-Lowry and S. Mozzon and 0 T. J. N. Nelson and P. Nguyen and L. K. Nuttall and 0 J. Oberling and Richard J. Oram and C. Osthelder and D. J. Ottaway and H. Overmier and J. R. Palamos and W. Parker and E. Payne and A. Pele and R. Penhorwood and C. J. Perez and M. Pirello and H. Radkins and K. E. Ramirez and J. W. Richardson and K. Riles and N. A. Robertson and J. G. Rollins and C. L. Romel and J. H. Romie and M. P. Ross and K. Ryan and T. Sadecki and E. J. Sanchez and L. E. Sanchez and T. R. Saravanan and R. L. Savage and D. Schaetzl and R. Schnabel and R. M. S. Schofield and E. Schwartz and D. Sellers and T. Shaffer and J. R. Smith and S. Soni and B. Sorazu and A. P. Spencer and K. A. Strain and L. Sun and M. J. Szczepanczyk and M. Thomas and P. Thomas and K. A. Thorne and K. Toland and C. I. Torrie and G. Traylor and A. L. Urban and G. Vajente and G. Valdes and D. C. Vander-Hyde and P. J. Veitch and K. Venkateswara and G. Venugopalan and A. D. Viets and C. Vorvick and M. Wade and J. Warner and B. Weaver and R. Weiss and B. Willke and C. C. Wipf and L. Xiao and H. Yamamoto and Hang Yu and L. Zhang and M. E. Zucker and J. Zweizig},
journal= {arXiv preprint arXiv:2105.12052},
year = {2021}
}
Comments
24 pages, 5 figures