A Caltech Library Service

Ultrahigh-Q mechanical oscillators through optical trapping

Chang, D. E. and Ni, K.-K. and Painter, O. and Kimble, H. J. (2012) Ultrahigh-Q mechanical oscillators through optical trapping. New Journal of Physics, 14 (4). Art. No. 045002. ISSN 1367-2630. doi:10.1088/1367-2630/14/4/045002.

PDF - Published Version
Creative Commons Attribution Non-commercial Share Alike.

[img] PDF - Submitted Version
See Usage Policy.


Use this Persistent URL to link to this item:


Rapid advances are being made toward optically cooling a single mode of a micro-mechanical system to its quantum ground state and observing the quantum behavior at macroscopic scales. Reaching this regime in room-temperature environments requires a stringent condition on the mechanical quality factor Q_m and frequency f_m, Q_m f_m ≳ k_BT_(bath)/h, which so far has been marginally satisfied only in a small number of systems. Here we propose and analyze a new class of systems that should enable one to obtain unprecedented Q-frequency products. The technique is based on the use of optical forces to ‘trap’ and stiffen the motion of a tethered mechanical structure, thereby freeing the resulting mechanical frequencies and decoherence rates from the underlying material properties.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Painter, O.0000-0002-1581-9209
Additional Information:© 2012 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. Received October 24 2011. Published April 2 2012. The authors thank Dal Wilson and Richard Norte for many helpful discussions. DEC acknowledges support from the NSF (grant no. PHY-0803371), the Gordon and Betty Moore Foundation through Caltech’s Center for the Physics of Information (CPI), and Fundació Privada Cellex Barcelona. KN acknowledges support from the CPI. HJK and OJP acknowledges support from the DARPA ORCHID program. HJK also acknowledges support from the NSF and DoD National Security Science and Engineering Faculty Fellowships (NSSEFF) program.
Group:Institute for Quantum Information and Matter
Funding AgencyGrant Number
Gordon and Betty Moore FoundationUNSPECIFIED
Fundació Privada Cellex BarcelonaUNSPECIFIED
Defense Advanced Research Projects Agency (DARPA)UNSPECIFIED
National Security Science and Engineering Faculty FellowshipUNSPECIFIED
Caltech Center for the Physics of InformationUNSPECIFIED
Issue or Number:4
Classification Code:PACS: 03.65.Yz; 42.50.Xa; 42.50.Ct
Record Number:CaltechAUTHORS:20120515-135524348
Persistent URL:
Official Citation:Ultrahigh-Q mechanical oscillators through optical trapping D E Chang et al 2012 New J. Phys. 14 045002
Usage Policy:Third parties will have the same rights to reuse the Article as described in the Creative Commons Attribution–NonCommercial-ShareAlike 3.0 license. These open access rights allow third-party users to copy, distribute and display the published version of the Article, and create derivative works, subject to appropriate attribution and non-commercial exploitation.
ID Code:31476
Deposited By: Joy Painter
Deposited On:15 May 2012 21:29
Last Modified:12 Jul 2022 19:40

Repository Staff Only: item control page