Quantum-correlated motion and heralded entanglement of distant optomechanically coupled objects
arXiv:1205.6596 · doi:10.1088/0953-4075/45/24/245501
Abstract
The motion of two distant trapped particles or mechanical oscillators can be strongly coupled by light modes in a high finesse optical resonator. In a two mode ring cavity geometry, trapping, cooling and coupling is implemented by the same modes. While the cosine mode provides for trapping, the sine mode facilitates ground state cooling and mediates non-local interactions. For classical point particles the centre-of-mass mode is strongly damped and the individual momenta get anti-correlated. Surprisingly, quantum fluctuations induce the opposite effect of positively-correlated particle motion, which close to zero temperature generates entanglement. The non-classical correlations and entanglement are dissipation-induced and particularly strong after detection of a scattered photon in the sine mode. This allows for heralded entanglement by post-selection. Entanglement is concurrent with squeezing of the particle distance and relative momenta, while the centre-of-mass observables acquire larger uncertainties.
7 pages, 8 figures
References in corpus (27)
- A computable measure of entanglement
- Peres-Horodecki separability criterion for continuous variable systems
- Strong dispersive coupling of a high finesse cavity to a micromechanical membrane
- Theory of ground state cooling of a mechanical oscillator using dynamical back-action
- Entanglement in continuous variable systems: Recent advances and current perspectives
- Entangling macroscopic oscillators exploiting radiation pressure
- Entanglement generated by dissipation and steady state entanglement of two macroscopic objects
- Entanglement by a beam splitter: nonclassicality as a prerequisite for entanglement
- Implementation of Cavity Squeezing of a Collective Atomic Spin
- Cavity Loss Induced Generation of Entangled Atoms
- Demonstration of an ultracold micro-optomechanical oscillator in a cryogenic cavity
- Steady state entanglement in the mechanical vibrations of two dielectric membranes
- Cavity Nonlinear Optics at Low Photon Numbers from Collective Atomic Motion
- Cooling and squeezing via quadratic optomechanical coupling
- Optically Levitating Dielectrics in the Quantum Regime: Theory and Protocols
- Entangling movable mirrors in a double cavity system
- Multiple membrane cavity optomechanics
- Entanglement of distant optomechanical systems
- Single-Atom Cavity QED and Opto-Micromechanics
- Proposal for entangling remote micromechanical oscillators via optical measurements
- REVIEW. Quantum optics with ultracold quantum gases: towards the full quantum regime of the light-matter interaction
- Effect of phase noise on the generation of stationary entanglement in cavity optomechanics
- Entanglement within the Quantum Trajectory Description of Open Quantum Systems
- Microscopic physics of quantum self-organisation of optical lattices in cavities
- C++QED: An object-oriented framework for wave-function simulations of cavity QED systems
- Optomechanics with molecules in a strongly pumped ring cavity
- High-sensitivity force measurement using entangled probes
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- Antiferromagnetic self-ordering of a Fermi gas in a ring cavity
- Self-Ordered stationary states of driven quantum degenerate gases in optical resonators
- Subrecoil cavity cooling towards degeneracy: A numerical study
- The Monte Carlo wave-function method: a robust adaptive algorithm and a study in convergence
- Multistable particle-field dynamics in cavity-generated optical lattices