Scientific Results

Dynamical two-mode squeezing of thermal fluctuations in a cavity optomechanical system

Year: 2016

Authors: Pontin A., Bonaldi M., Borrielli A., Marconi L., Marino F., Pandraud G., Prodi G.A., Sarro P.M., Serra E., Marin F.

Autors Affiliation: Dipartimento di Fisica e Astronomia, Università di Firenze, Via Sansone 1, I-50019 Sesto Fiorentino (FI), Italy;
INFN, Sezione di Firenze, Via Sansone 1, I-50019 Sesto Fiorentino (FI), Italy;
Institute of Materials for Electronics and Magnetism, Nanoscience-Trento-FBK Division, 38123 Povo, Trento, Italy;
Istituto Nazionale di Fisica Nucleare (INFN), Trento Institute for Fundamental Physics and Application, I-38123 Povo, Trento, Italy;
CNR-INO, Largo Enrico Fermi 6, I-50125 Firenze, Italy;
Department of Microelectronics and Computer Engineering /ECTM/DIMES, Delft University of Technology,Feldmanweg 17, 2628 CT Delft, Netherlands;
Dipartimento di Fisica, Università di Trento, I-38123 Povo, Trento, Italy.
European Laboratory for Non-Linear Spectroscopy (LENS), Via Carrara 1, I-50019 Sesto Fiorentino (FI), Italy.

Abstract: We report the experimental observation of two-mode squeezing in the oscillation quadratures of a thermal micro-oscillator. This effect is obtained by parametric modulation of the optical spring in a cavity optomechanical system. In addition to stationary variance measurements, we describe the dynamic behavior in the regime of pulsed parametric excitation, showing an enhanced squeezing effect surpassing the stationary 3 dB limit. While the present experiment is in the classical regime, our technique can be exploited to produce entangled, macroscopic quantum optomechanical modes.

Journal/Review: PHYSICAL REVIEW LETTERS

Volume: 116 (10)      Pages from: 103601  to: 103601

More Information: This work has been supported by MIUR (PRIN 2010-2011 and QUANTOM project) and by INFN (HUMOR project). A. B. acknowledges support from the MIUR under the “FIRB-Futuro in ricerca” funding program, project code RBFR13QUVI.
DOI: 10.1103/PhysRevLett.116.103601

Citations: 24
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