Time Resolved Phase Space Tomography of an Optomechanical Cavity
arXiv:1408.2331 · doi:10.1103/PhysRevA.91.043829
Abstract
We experimentally study the phase space distribution (PSD) of a mechanical resonator that is simultaneously coupled to two electromagnetic cavities. The first one, operating in the microwave band, is employed for inducing either cooling or self-excited oscillation, whereas the second one, operating in the optical band, is used for displacement detection. A tomography technique is employed for extracting the PSD from the signal reflected by the optical cavity. Measurements of PSD are performed in steady state near the threshold of self-excited oscillation while sweeping the microwave cavity detuning. In addition, we monitor the time evolution of the transitions from an optomechanically cooled state to a state of self excited oscillation. This transition is induced by abruptly switching the microwave driving frequency from the red-detuned region to the blue-detuned one. The experimental results are compared with theoretical predictions that are obtained by solving the Fokker-Planck equation. The feasibility of generating quantum superposition states in the system under study is briefly discussed.
References in corpus (24)
- Sideband Cooling Micromechanical Motion to the Quantum Ground State
- Optomechanically induced transparency
- Electromagnetically Induced Transparency and Slow Light with Optomechanics
- Strong dispersive coupling of a high finesse cavity to a micromechanical membrane
- Radiation-pressure cooling and optomechanical instability of a micro-mirror
- Self-cooling of a micro-mirror by radiation pressure
- Circuit cavity electromechanics in the strong coupling regime
- Resolved Sideband Cooling of a Micromechanical Oscillator
- Ground-state cooling of a micromechanical oscillator: generalized framework for cold damping and cavity-assisted cooling schemes
- State Transfer Between a Mechanical Oscillator and Microwave Fields in the Quantum Regime
- Dispersive optomechanics: a membrane inside a cavity
- High-sensitivity optical monitoring of a micro-mechanical resonator with a quantum-limited optomechanical sensor
- Control of microwave signals using circuit nano-electromechanics
- Bipartite and tripartite output entanglement in 3-mode optomechanical systems
- Optoelectromechanical transducer: reversible conversion between microwave and optical photons
- Observation and interpretation of motional sideband asymmetry in a quantum electro-mechanical device
- Towards Optomechanical Quantum State Reconstruction of Mechanical Motion
- Quantum limit of photothermal cooling
- Quantum network of superconducting qubits through opto-mechanical interface
- Mechanical mode dependence of bolometric back-action in an AFM microlever
- Quantum analysis of a nonlinear microwave cavity-embedded dc SQUID displacement detector
- Quantum Nonlinear Optics Near Optomechanical Instabilities
- Intermittency in an Optomechanical Cavity Near a Subcritical Hopf Bifurcation
- The prospect of detecting single-photon force effects in cavity optomechanics