Ultralow-dissipation micro-oscillator for quantum optomechanics

Year: 2012

Authors: Serra E., Borrielli A., Cataliotti F. S., Marin F., Marino F., Pontin A., Prodi G. A., Bonaldi M.

Autors Affiliation: Interdisciplinary Laboratory for Computational Science (LISC), FBK-University of Trento, I-38123 Povo (TN), Italy; Istituto Nazionale di Fisica Nucleare (INFN), Gruppo Collegato di Trento, I-38123 Povo (TN), Italy; Institute of Materials for Electronics and Magnetism, Nanoscience-Trento-FBK Division, I-38123 Povo (TN), Italy; Dipartimento di Energetica, Università di Firenze, Via Santa Marta 3, I-50139 Firenze, Italy; European Laboratory for Non-Linear Spectroscopy (LENS), Via Carrara 1, I-50019 Sesto Fiorentino (FI), Italy; INFN, Sezione di Firenze, Via Sansone 1, I-50019 Sesto Fiorentino (FI), Italy; Dipartimento di Fisica, Università di Firenze, Via Sansone 1, I-50019 Sesto Fiorentino (FI), Italy; CNR-Istituto dei Sistemi Complessi, Via Madonna del Piano 10, I-50019 Sesto Fiorentino (FI), Italy; Dipartimento di Fisica, Università di Trento, I-38123 Povo (TN), Italy

Abstract: Generating nonclassical states of light by optomechanical coupling depends critically on the mechanical and optical properties of micro-oscillators and on the minimization of thermal noise. We present an oscillating micromirror with a mechanical quality factor Q = 2.6 x 10(6) at cryogenic temperature and a finesse of 65 000, obtained thanks to an innovative approach to the design and the control of mechanical dissipation. We predict that, already at 4 K with an input laser power of 2 mW, the radiation-pressure quantum fluctuations become the main noise source, overcoming thermal noise. This feature makes our devices particularly suitable for the production of ponderomotive squeezing.


Volume: 86 (5)      Pages from: 051801  to: 051801

More Information: We acknowledge the support from the MEMS2 joint project of the Istituto Nazionale di Fisica Nucleare and Fondazione Bruno Kessler. A. B. acknowledges support from the European Research Council under the European Community\’s Seventh Framework Programme (FP7/2007-2013)/ERC Grant Agreement No. 202680.
KeyWords: micro-mirrors; optomechanics; ground-state; cavity optomechanics; radiation-pressure
DOI: 10.1103/PhysRevA.86.051801

Citations: 21
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