LIGOs Quantum Response to Squeezed States

• URL: http://arxiv.org/abs/2105.12052v1
• Date: Tue, 25 May 2021 16:33:23 GMT
• Title: LIGOs Quantum Response to Squeezed States
• Authors: L. McCuller (1), S. E. Dwyer (2), A. C. Green (3), Haocun Yu (1), L. Barsotti (1), C. D. Blair (4), D. D. Brown (5), A. Effler (4), M. Evans (1), A. Fernandez-Galiana (1), P. Fritschel (1), V. V. Frolov (4), N. Kijbunchoo (6), G. L. Mansell (1, 2), F. Matichard (7, 1), N. Mavalvala (1), D. E. McClelland (6), T. McRae (6), A. Mullavey (4), D. Sigg (2), B. J. J. Slagmolen (6), M. Tse (1), T. Vo (8), R. L. Ward (6), C. Whittle (1), R. Abbott (7), C. Adams (4), R. X. Adhikari (7), A. Ananyeva (7), S. Appert (7), K. Arai (7), J. S. Areeda (9), Y. Asali (1),0 S. M. Aston (4), C. Austin (11), A. M. Baer (12), M. Ball (13), S. W. Ballmer (8), S. Banagiri (14), D. Barker (2), J. Bartlett (2), B. K. Berger (15), J. Betzwieser (4), D. Bhattacharjee (16), G. Billingsley (7), S. Biscans (1, 7), R. M. Blair (2), N. Bode (17, 18), P. Booker (17, 18), R. Bork (7), A. Bramley (4), A. F. Brooks (7), A. Buikema (1), C. Cahillane (7), K. C. Cannon (19), X. Chen (2),0 A. A. Ciobanu (5), F. Clara (2), C. M. Compton (2), S. J. Cooper (21), K. R. Corley (1),0 S. T. Countryman (1),0 P. B. Covas (22), D. C. Coyne (7), L. E. H. Datrier (23), D. Davis (8), C. Di Fronzo (21), K. L. Dooley (24, 25), J. C. Driggers (2), T. Etzel (7), T. M. Evans (4), J. Feicht (7), P. Fulda (3), M. Fyffe (4), J. A. Giaime (11, 4), K. D. Giardina (4), P. Godwin (26), E. Goetz (11, 16, 27), S. Gras (1), C. Gray (2), R. Gray (23), E. K. Gustafson (7), R. Gustafson (28), J. Hanks (2), J. Hanson (4), T. Hardwick (11), R. K. Hasskew (4), M. C. Heintze (4), A. F. Helmling-Cornell (13), N. A. Holland (6), J. D. Jones (2), S. Kandhasamy (29), S. Karki (13), M. Kasprzack (7), K. Kawabe (2), P. J. King (2), J. S. Kissel (2), Rahul Kumar (2), M. Landry (2), B. B. Lane (1), B. Lantz (15), M. Laxen (4), Y. K. Lecoeuche (2), J. Leviton (28), J. Liu (17, 18), M. Lormand (4), A. P. Lundgren (3),0 R. Macas (24), M. MacInnis (1), D. M. Macleod (24), S. Marka (1),0 Z. Marka (1),0 D. V. Martynov (21), K. Mason (1), T. J. Massinger (1), R. McCarthy (2), S. McCormick (4), J. McIver (7, 27), G. Mendell (2), K. Merfeld (13), E. L. Merilh (2), F. Meylahn (17, 18), T. Mistry (31), R. Mittleman (1), G. Moreno (2), C. M. Mow-Lowry (21), S. Mozzon (3),0 T. J. N. Nelson (4), P. Nguyen (13), L. K. Nuttall (3),0 J. Oberling (2), Richard J. Oram (4), C. Osthelder (7), D. J. Ottaway (5), H. Overmier (4), J. R. Palamos (13), W. Parker (4, 32), E. Payne (33), A. Pele (4), R. Penhorwood (28), C. J. Perez (2), M. Pirello (2), H. Radkins (2), K. E. Ramirez (34), J. W. Richardson (7), K. Riles (28), N. A. Robertson (7, 23), J. G. Rollins (7), C. L. Romel (2), J. H. Romie (4), M. P. Ross (35), K. Ryan (2), T. Sadecki (2), E. J. Sanchez (7), L. E. Sanchez (7), T. R. Saravanan (29), R. L. Savage (2), D. Schaetzl (7), R. Schnabel (36), R. M. S. Schofield (13), E. Schwartz (4), D. Sellers (4), T. Shaffer (2), J. R. Smith (9), S. Soni (11), B. Sorazu (23), A. P. Spencer (23), K. A. Strain (23), L. Sun (7), M. J. Szczepanczyk (3), M. Thomas (4), P. Thomas (2), K. A. Thorne (4), K. Toland (23), C. I. Torrie (7), G. Traylor (4), A. L. Urban (11), G. Vajente (7), G. Valdes (11), D. C. Vander-Hyde (8), P. J. Veitch (5), K. Venkateswara (35), G. Venugopalan (7), A. D. Viets (37), C. Vorvick (2), M. Wade (38), J. Warner (2), B. Weaver (2), R. Weiss (1), B. Willke (18, 17), C. C. Wipf (7), L. Xiao (7), H. Yamamoto (7), Hang Yu (1), L. Zhang (7), M. E. Zucker (1, 7), and J. Zweizig (7) ((1) Massachusetts Institute of Technology, (2) LIGO Hanford Observatory, (3) University of Florida, (4) LIGO Livingston Observatory, (5) OzGrav, University of Adelaide, (6) OzGrav, Australian National University, (7) LIGO, California Institute of Technology, (8) Syracuse University, (9) California State University Fullerton, (10) Columbia University, (11) Louisiana State University, (12) Christopher Newport University, (13) University of Oregon, (14) University of Minnesota, (15) Stanford University, (16) Missouri University of Science and Technology, (17) Max Planck Institute for Gravitational Physics (Albert Einstein Institute), (18) Leibniz Universitat Hannover, (19) RESCEU, University of Tokyo, (20) OzGrav, University of Western Australia, (21) University of Birmingham, (22) Universitat de les Illes Balears, (23) SUPA, University of Glasgow, (24) Cardiff University, (25) The University of Mississippi, (26) The Pennsylvania State University, (27) University of British Columbia, (28) University of Michigan, (29) Inter-University Centre for Astronomy and Astrophysics, (30) University of Portsmouth, (31) The University of Sheffield, (32) Southern University and A&M College, (33) OzGrav, School of Physics & Astronomy, (34) The University of Texas Rio Grande Valley, (35) University of Washington, (36) Universitat Hamburg, (37) Concordia University Wisconsin, (38) Kenyon College)
• Abstract summary: 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. 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.
• Score: 0.3568391741984857
• License: http://creativecommons.org/licenses/by/4.0/
• 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.

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