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APS » Journals » Phys. Rev. Lett. » Volume 98 » Issue 14
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Phys. Rev. Lett. 98, 147201 (2007) [4 pages]

Continuous Measurement of the Energy Eigenstates of a Nanomechanical Resonator without a Nondemolition Probe

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Kurt Jacobs1,2, Pavel Lougovski2, and Miles Blencowe3
1Department of Physics, University of Massachusetts at Boston, 100 Morrissey Blvd, Boston, Massachusetts 02125, USA
2Quantum Science and Technologies Group, Hearne Institute for Theoretical Physics, Department of Physics and Astronomy, Louisiana State University, 202 Nicholson Hall, Tower Drive, Baton Rouge, Louisiana 70803, USA
3Department of Physics and Astronomy, Dartmouth College, Hanover, New Hampshire 03755, USA

Received 26 July 2006; published 2 April 2007

We show that it is possible to perform a continuous measurement that continually projects a nanoresonator into its energy eigenstates by employing a linear coupling with a two-state system. This technique makes it possible to perform a measurement that exposes the quantum nature of the resonator by coupling it to a Cooper-pair box and a superconducting transmission line resonator.

© 2007 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.98.147201
DOI:
10.1103/PhysRevLett.98.147201
PACS:
85.85.+j, 03.65.Ta, 45.80.+r, 85.35.Gv
 
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