Bulletin of the American Physical Society
APS March Meeting 2010
Volume 55, Number 2
Monday–Friday, March 15–19, 2010; Portland, Oregon
Session A8: Quantum Opto-Mechanics
8:00 AM–11:00 AM,
Monday, March 15, 2010
Room: Portland Ballroom 255
Sponsoring Units: DAMOP GQI
Chair: Lucia Hackermueller, University of Nottingham
Abstract ID: BAPS.2010.MAR.A8.1
Abstract: A8.00001 : Strong quadratic and quartic optomechanical couplings for QND measurements*
8:00 AM–8:36 AM
Preview Abstract Abstract
We describe a new class of optomechanical couplings which occur in devices consisting of a dielectric membrane placed inside an optical cavity. These couplings arise from avoided crossings in the spectrum of such a cavity, and provide a number of new functionalities to existing optomechanical devices. We show that these crossings result in purely quadratic optomechanical coupling three orders of magnitude stronger than previously demonstrated, and that optical modes with strong quadratic couplings coexist with other modes having linear coupling. In addition, we show that it is possible to realize a purely quartic optomechanical coupling. The complex cavity spectrum, including the avoided crossings, is reproduced by a straightforward theoretical model. These results are demonstrated using a stochiometric silicon nitride membrane, which for 1064 nm laser light results in an intracavity absorption more than two orders of magnitude lower than the non-stochiometric membranes used previously. We describe the possible roles these improved couplings and decreased optical loss may play in the quantum regime of optomechanical devices.
*This work supported by the NSF, DARPA, AFOSR, the Alfred P. Sloan Foundation, and Yale University.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2010.MAR.A8.1
The American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics.
1 Physics Ellipse, College Park, MD 20740-3844
Editorial Office 1 Research Road, Ridge, NY 11961-2701 (631) 591-4000
Office of Public Affairs 529 14th St NW, Suite 1050, Washington, D.C. 20045-2001 (202) 662-8700