title: Dynamical Two-Mode Squeezing of Thermal Fluctuations in a Cavity Optomechanical System.
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.
authors.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.
authors.forename: A
authors.initials: A
authors.lastname: Pontin
authors.affiliation: 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.
authors.forename: M
authors.initials: M
authors.lastname: Bonaldi
authors.affiliation: 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.
authors.forename: A
authors.initials: A
authors.lastname: Borrielli
authors.affiliation: Dipartimento di Fisica e Astronomia, Università di Firenze, Via Sansone 1, I-50019 Sesto Fiorentino (FI), Italy.
authors.forename: L
authors.initials: L
authors.lastname: Marconi
authors.affiliation: INFN, Sezione di Firenze, Via Sansone 1, I-50019 Sesto Fiorentino (FI), Italy.|CNR-INO, Largo Enrico Fermi 6, I-50125 Firenze, Italy.
authors.forename: F
authors.initials: F
authors.lastname: Marino
authors.affiliation: Department of Microelectronics and Computer Engineering /ECTM/DIMES, Delft University of Technology, Feldmanweg 17, 2628 CT Delft, Netherlands.
authors.forename: G
authors.initials: G
authors.lastname: Pandraud
authors.affiliation: Istituto Nazionale di Fisica Nucleare (INFN), Trento Institute for Fundamental Physics and Application, I-38123 Povo, Trento, Italy.|Dipartimento di Fisica, Università di Trento, I-38123 Povo, Trento, Italy.
authors.forename: G A
authors.initials: GA
authors.lastname: Prodi
authors.affiliation: Department of Microelectronics and Computer Engineering /ECTM/DIMES, Delft University of Technology, Feldmanweg 17, 2628 CT Delft, Netherlands.
authors.forename: P M
authors.initials: PM
authors.lastname: Sarro
authors.affiliation: Istituto Nazionale di Fisica Nucleare (INFN), Trento Institute for Fundamental Physics and Application, I-38123 Povo, Trento, Italy.|Department of Microelectronics and Computer Engineering /ECTM/DIMES, Delft University of Technology, Feldmanweg 17, 2628 CT Delft, Netherlands.
authors.forename: E
authors.initials: E
authors.lastname: Serra
authors.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.|CNR-INO, Largo Enrico Fermi 6, I-50125 Firenze, Italy.|European Laboratory for Non-Linear Spectroscopy (LENS), Via Carrara 1, I-50019 Sesto Fiorentino (FI), Italy.
authors.forename: F
authors.initials: F
authors.lastname: Marin