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Quantum squeezing of motion in a mechanical resonator

Wollman, E. E. and Lei, C. U. and Weinstein, A. J. and Suh, J. and Kronwald, A. and Marquardt, F. and Clerk, A. A. and Schwab, K. C. (2015) Quantum squeezing of motion in a mechanical resonator. Science, 349 (6251). pp. 952-955. ISSN 0036-8075. doi:10.1126/science.aac5138.

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According to quantum mechanics, a harmonic oscillator can never be completely at rest. Even in the ground state, its position will always have fluctuations, called the zero-point motion. Although the zero-point fluctuations are unavoidable, they can be manipulated. Using microwave frequency radiation pressure, we have manipulated the thermal fluctuations of a micrometer-scale mechanical resonator to produce a stationary quadrature-squeezed state with a minimum variance of 0.80 times that of the ground state. We also performed phase-sensitive, back-action evading measurements of a thermal state squeezed to 1.09 times the zero-point level. Our results are relevant to the quantum engineering of states of matter at large length scales, the study of decoherence of large quantum systems, and for the realization of ultrasensitive sensing of force and motion.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper Materials
Wollman, E. E.0000-0002-5474-3745
Weinstein, A. J.0000-0002-0928-6784
Suh, J.0000-0002-0112-0499
Marquardt, F.0000-0003-4566-1753
Clerk, A. A.0000-0001-7297-9068
Schwab, K. C.0000-0001-8216-4815
Additional Information:© 2015 American Association for the Advancement of Science. Received for publication 7 May 2015. Accepted for publication 28 July 2015. This work is supported by funding provided by the Institute for Quantum Information and Matter, an NSF Physics Frontiers Center with support of the Gordon and Betty Moore Foundation (NSF-IQIM 1125565), by the Defense Advanced Research Projects Agency (DARPA-QUANTUM HR0011-10-1-0066), by the NSF (NSF-DMR 1052647 and NSF-EEC 0832819), and by the Semiconductor Research Corporation (SRC) and Defense Advanced Research Project Agency (DARPA) through STARnet Center for Function Accelerated nanoMaterial Engineering (FAME). A.A.C., F.M., and A.K. acknowledge support from the DARPA ORCHID program through a grant from AFOSR, F.M. and A.K. from ITN cQOM and the ERC OPTOMECH, and A.A.C. from NSERC.
Group:Institute for Quantum Information and Matter
Funding AgencyGrant Number
Institute for Quantum Information and Matter (IQIM)UNSPECIFIED
NSF Physics Frontiers CenterUNSPECIFIED
Gordon and Betty Moore FoundationUNSPECIFIED
Defense Advanced Research Projects Agency (DARPA)HR0011-10-1-0066
Semiconductor Research CorporationUNSPECIFIED
Air Force Office of Scientific Research (AFOSR)UNSPECIFIED
European Research Council (ERC)UNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
Issue or Number:6251
Record Number:CaltechAUTHORS:20150728-095253969
Persistent URL:
Official Citation:Quantum squeezing of motion in a mechanical resonator E. E. Wollman, C. U. Lei, A. J. Weinstein, J. Suh, A. Kronwald, F. Marquardt, A. A. Clerk, and K. C. Schwab Science 28 August 2015: 349 (6251), 952-955. [DOI:10.1126/science.aac5138]
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:59033
Deposited By: George Porter
Deposited On:29 Jul 2015 19:59
Last Modified:10 Nov 2021 22:13

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