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Phys. Rev. B 78, 134301 (2008) [8 pages]

Quantum theory of transmission line resonator-assisted cooling of a micromechanical resonator

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Yong Li1,2, Ying-Dan Wang3,1, Fei Xue4,5,6, and C. Bruder1
1Department of Physics, University of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland
2Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong, China
3NTT Basic Research Laboratories, NTT Corporation, Atsugi-shi, Kanagawa 243-0198, Japan
4CREST, Japan Science and Technology Agency (JST), Kawaguchi, Saitama 332-0012, Japan
5Frontier Research System, The Institute of Physical and Chemical Research (RIKEN), Wako-shi, Saitama 351-0198, Japan
6Department of Electrical Engineering, Technion, Haifa 32000, Israel

Received 28 April 2008; revised 8 August 2008; published 6 October 2008

We propose a quantum description of the cooling of a micromechanical flexural oscillator by a one-dimensional transmission line resonator via a force that resembles cavity radiation pressure. The mechanical oscillator is capacitively coupled to the central conductor of the transmission line resonator. At the optimal point, the micromechanical oscillator can be cooled close to the ground state, and the cooling can be measured by homodyne detection of the output microwave signal.

© 2008 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.78.134301
DOI:
10.1103/PhysRevB.78.134301
PACS:
42.50.Lc, 85.85.+j, 45.80.+r, 03.67.Mn
 
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