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: Univ Florence, Dipartimento Fis & Astron, Via Sansone 1, I-50019 Sesto Fiorentino, FI, Italy; Ist Nazl Fis Nucl, Sez Firenze, Via Sansone 1, I-50019 Sesto Fiorentino, FI, Italy; Inst Mat Elect & Magnetism, Nanosci Trento FBK Div, I-38123 Povo, Trento, Italy; Trento Inst Fundamental Phys & Applicat, Ist Nazl Fis Nucl, I-38123 Povo, Trento, Italy; CNR, INO, Largo Enrico Fermi 6, I-50125 Florence, Italy; Delft Univ Technol, Dept Microelect & Comp Engn ECTM DIMES, Feldmanweg 17, NL-2628 CT Delft, Netherlands; Univ Trento, Dipartimento Fis, I-38123 Povo, Trento, Italy; European Lab Nonlinear Spect 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: 103601-1  to: 103601-6

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.
KeyWords: quantum ground-state; mechanical resonator; motion; oscillator
DOI: 10.1103/PhysRevLett.116.103601

Citations: 60
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