@article{9a04fab6cacd4df387a2e70209c06840,
title = "Approaching the motional ground state of a 10-kg object",
abstract = "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 because the thermal environment masks any quantum signature of the object{\textquoteright}s motion. The thermal environment also masks the effects of proposed modifications of quantum mechanics at large mass scales. We prepared the center-of-mass motion of a 10-kilogram mechanical oscillator in a state with an average phonon occupation of 10.8. The reduction in temperature, from room temperature to 77 nanokelvin, 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. Our approach will enable the possibility of probing gravity on massive quantum systems.",
keywords = "UKRI, STFC",
author = "{The LIGO Scientific Collaboration} and Chris Whittle and Hall, {Evan D.} and Sheila Dwyer and Nergis Mavalvala and Vivishek Sudhir and R. Abbott and A. Ananyeva and C. Austin and L. Barsotti and J. Betzwieser and Blair, {C. D.} and A. Buikema and C. Cahillane and Driggers, {J. C.} and A. Effler and A. Fernandez-Galiana and P. Fritschel and Frolov, {V. V.} and T. Hardwick and M. Kasprzack and K. Kawabe and N. Kijbunchoo and Kissel, {J. S.} and Mansell, {G. L.} and F. Matichard and L. McCuller and T. McRae and A. Mullavey and A. Pele and Schofield, {R. M. S.} and Lundgren, {A. P.} and R. Macas and S. Mozzon and Nuttall, {L. K.}",
note = "Final version to be uploaded to ArXiv. No embargo. Rights statement: {"}This is the author's version of the work. It is posted here by permission of the AAAS for personal use, not for redistribution. The definitive version was published in Science Journal Title {VOL#, (DATE)}, doi: {doi number for your manuscript}{"}",
year = "2021",
month = jun,
day = "18",
doi = "10.1126/science.abh2634",
language = "English",
volume = "372",
pages = "1333--1336",
journal = "Science",
issn = "1095-9203",
publisher = "American Association for the Advancement of Science",
number = "6548",
}