Approaching the motional ground state of a 10 kg object
Creators: name: Whittle, Chris
name: Hall, Evan D.
name: Dwyer, Sheila
name: Mavalvala, Nergis
name: Sudhir, Vivishek
name: Abbott, R.
name: Ananyeva, A.
name: Austin, C.
name: Barsotti, L.
name: Betzwieser, J.
name: Blair, C. D.
name: Brooks, A. F.
name: Brown, D. D.
name: Buikema, A.
name: Cahillane, C.
name: Driggers, J. C.
name: Effler, A.
name: Fernandez-Galiana, A.
name: Fritschel, P.
name: Frolov, V. V.
name: Hardwick, T.
name: Kasprzack, M.
name: Kawabe, K.
name: Kijbunchoo, N.
name: Kissel, J. S.
name: Mansell, G. L.
name: Matichard, F.
name: McCuller, L.
name: McRae, T.
name: Mullavey, A.
name: Pele, A.
name: Schofield, R. M. S.
name: Sigg, D.
name: Tse, M.
name: Vajente, G.
name: Vander-Hyde, D. C.
name: Yu, Hang
name: Yu, Haocun
name: Adams, C.
name: Adhikari, R. X.
name: Appert, S.
name: Arai, K.
name: Areeda, J. S.
name: Asali, Y.
name: Aston, S. M.
name: Baer, A. M.
name: Ball, M.
name: Ballmer, S. W.
name: Banagiri, S.
name: Barker, D.
name: Bartlett, J.
name: Berger, B. K.
name: Bhattacharjee, D.
name: Billingsley, G.
name: Biscans, S.
name: Blair, R. M.
name: Bode, N.
name: Booker, P.
name: Bork, R.
name: Bramley, A.
name: Cannon, K. C.
name: Chen, X.
name: Ciobanu, A. A.
name: Clara, F.
name: Compton, C. M.
name: Cooper, S. J.
name: Corley, K. R.
name: Countryman, S. T.
name: Covas, P. B.
name: Coyne, D. C.
name: Datrier, L. E. H.
name: Davis, D.
name: Di Fronzo, C.
name: Dooley, K. L.
name: Dupej, P.
name: Etzel, T.
name: Evans, M.
name: Evans, T. M.
name: Feicht, J.
name: Fulda, P.
name: Fyffe, M.
name: Giaime, J. A.
name: Giardina, K. D.
name: Godwin, P.
name: Goetz, E.
name: Gras, S.
name: Gray, C.
name: Gray, R.
name: Green, A. C.
name: Gustafson, E. K.
name: Gustafson, R.
name: Hanks, J.
name: Hanson, J.
name: Hasskew, R. K.
name: Heintze, M. C.
name: Helmling-Cornell, A. F.
name: Holland, N. A.
name: Jones, J. D.
name: Kandhasamy, S.
name: Karki, S.
name: King, P. J.
name: Kumar, Rahul
name: Landry, M.
name: Lane, B. B.
name: Lantz, B.
name: Laxen, M.
name: Lecoeuche, Y. K.
name: Leviton, J.
name: Liu, J.
name: Lormand, M.
name: Lundgren, A. P.
name: Macas, R.
name: MacInnis, M.
name: Macleod, D. M.
name: Márka, S.
name: Márka, Z.
name: Martynov, D. V.
name: Mason, K.
name: Massinger, T. J.
name: McCarthy, R.
name: McClelland, D. E.
name: McCormick, S.
name: McIver, J.
name: Mendell, G.
name: Merfeld, K.
name: Merilh, E. L.
name: Meylahn, F.
name: Mistry, T.
name: Mittleman, R.
name: Moreno, G.
name: Mow-Lowry, C. M.
name: Mozzon, S.
name: Nelson, T. J. N.
name: Nguyen, P.
name: Nuttall, L. K.
name: Oberling, J.
name: Oram, Richard J.
name: Osthelder, C.
name: Ottaway, D. J.
name: Overmier, H.
name: Palamos, J. R.
name: Parker, W.
name: Payne, E.
name: Penhorwood, R.
name: Perez, C. J.
name: Pirello, M.
name: Radkins, H.
name: Ramirez, K. E.
name: Richardson, J. W.
name: Riles, K.
name: Robertson, N. A.
name: Rollins, J. G.
name: Romel, C. L.
name: Romie, J. H.
name: Ross, M. P.
name: Ryan, K.
name: Sadecki, T.
name: Sanchez, E. J.
name: Sanchez, L. E.
name: Saravanan, T. R.
name: Savage, R. L.
name: Schaetzl, D.
name: Schnabel, R.
name: Schwartz, E.
name: Sellers, D.
name: Shaffer, T.
name: Slagmolen, B. J. J.
name: Smith, J. R.
name: Soni, S.
name: Sorazu, B.
name: Spencer, A. P.
name: Strain, K. A.
name: Sun, L.
name: Szczepańczyk, M. J.
name: Thomas, M.
name: Thomas, P.
name: Thorne, K. A.
name: Toland, K.
name: Torrie, C. I.
name: Traylor, G.
name: Urban, A. L.
name: Valdes, G.
name: Veitch, P. J.
name: Venkateswara, K.
name: Venugopalan, G.
name: Viets, A. D.
name: Vo, T.
name: Vorvick, C.
name: Wade, M.
name: Ward, R. L.
name: Warner, J.
name: Weaver, B.
name: Weiss, R.
name: Willke, B.
name: Wipf, C. C.
name: Xiao, L.
name: Yamamoto, H.
name: Zhang, L.
name: Zucker, M. E.
name: Zweizig, J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: The motion of a mechanical object -- even a human-sized object -- should be governed by the rules of quantum mechanics. Coaxing them into a quantum state is, however, difficult: the thermal environment masks any quantum signature of the object's motion. Indeed, the thermal environment also masks effects of proposed modifications of quantum mechanics at large mass scales. We prepare the center-of-mass motion of a 10 kg mechanical oscillator in a state with an average phonon occupation of 10.8. The reduction in temperature, from room temperature to 77 nK, is commensurate with an 11 orders-of-magnitude suppression of quantum back-action by feedback -- and a 13 orders-of-magnitude increase in the mass of an object prepared close to its motional ground state. This begets the possibility of probing gravity on massive quantum systems.
description: published version containing minor changes