Generating mechanical and optomechanical entanglement via pulsed interaction and measurement

Abstract

Entanglement generation at a macroscopic scale offers an exciting avenue to develop new quantum technologies and study fundamental physics on a tabletop. Cavity quantum optomechanics provides an ideal platform to generate and exploit such phenomena owing to the precision of quantum optics combined with recent experimental advances in optomechanical devices. In this work, we propose schemes operating outside the resolved-sideband regime, to prepare and verify both optical-mechanical and mechanical-mechanical entanglement. Our schemes employ pulsed interactions with a duration much less than the mechanical period and, together with homodyne measurements, can both generate and characterize these types of entanglement. To improve the performance of our schemes, a precooling stage comprising prior pulses can be utilized to increase the amount of entanglement prepared, and local optical squeezers may be used to provide resilience against open-system dynamics. The entanglement generated by our schemes is quantified using the logarithmic negativity and is analysed with respect to the strength of the pulsed optomechanical interactions for realistic experimental scenarios including mechanical decoherence and optical loss. Two separate schemes for mechanical entanglement generation are introduced and compared: one scheme based on an optical interferometric design, and the other comprising sequential optomechanical interactions. The pulsed nature of our protocols provides more direct access to these quantum correlations in the time domain, with applications including quantum metrology and tests of quantum decoherence. By considering a parameter set based on recent experiments, the feasibility to generate significant entanglement with our schemes, even with large optical losses, is demonstrated.

arXiv comment9 figures, 2 tables

References in corpus (69)

• Quantum Cryptography
• Cavity Optomechanics
• Mixed State Entanglement and Quantum Error Correction
• Separability Criterion for Density Matrices
• A computable measure of entanglement
• Advances in Quantum Metrology
• Quantum information with continuous variables
• Gaussian Quantum Information
• Separability of Mixed States: Necessary and Sufficient Conditions
• Peres-Horodecki separability criterion for continuous variable systems
• Optomechanical entanglement between a movable mirror and a cavity field
• Heralded entanglement between solid-state qubits separated by 3 meters
• Experimental long-lived entanglement of two macroscopic objects
• A Spin Entanglement Witness for Quantum Gravity
• Super-resolving phase measurements with a multi-photon entangled state
• Gravitationally-induced entanglement between two massive particles is sufficient evidence of quantum effects in gravity
• Entangling macroscopic oscillators exploiting radiation pressure
• On the impossibility of distilling Gaussian states with Gaussian operations
• Remote quantum entanglement between two micromechanical oscillators
• Probing Planck-scale physics with quantum optics
• Entangled massive mechanical oscillators
• De Broglie Wavelength of a Nonlocal Four-Photon
• Non-classical correlations between single photons and phonons from a mechanical oscillator
• Bound entangled Gaussian states
• A short walk through quantum optomechanics
• Quantum optics in the phase space - A tutorial on Gaussian states
• Functional Quantum Nodes for Entanglement Distribution over Scalable Quantum Networks
• Creating and probing macroscoping entanglement with light
• Entanglement of formation for symmetric Gaussian states
• Steady state entanglement in the mechanical vibrations of two dielectric membranes
• The entanglement cost under operations preserving the positivity of partial transpose
• Pulsed quantum optomechanics
• Quantum entanglement and teleportation in pulsed cavity-optomechanics
• Two-mode squeezed states in cavity optomechanics via engineering of a single reservoir
• Entangling movable mirrors in a double cavity system
• Partial Teleportation of Entanglement in the Noisy Environment
• Quantum state transfer between motion and light
• Entangled Mechanical Oscillators
• Nonlinear cavity optomechanics with nanomechanical thermal fluctuations
• Macroscopic Entanglement by Entanglement Swapping
• Cooling-by-measurement and mechanical state tomography via pulsed optomechanics
• Entangling nanomechanical oscillators in a ring cavity by feeding squeezed light
• Minimum output entropy of bosonic channels: a conjecture
• Pulsed excitation dynamics of an optomechanical crystal resonator near its quantum ground-state of motion
• Proposal for entangling remote micromechanical oscillators via optical measurements
• Quantum state majorization at the output of bosonic Gaussian channels
• Exploring a new regime for processing optical qubits: squeezing and unsqueezing single photons
• Slowing Quantum Decoherence by Squeezing in Phase Space
• Macroscopic optomechanics from displaced single-photon entanglement
• Measurement-induced macroscopic superposition states in cavity optomechanics
• Macroscopic tunneling of a membrane in an optomechanical double-well potential
• Strong optomechanical interactions in a sliced photonic crystal nanobeam
• Minimum decoherence cat-like states in Gaussian noisy channels
• Amplified transduction of Planck-scale effects using quantum optics
• Pulsed entanglement of two optomechanical oscillators
• Optimal quantum parameter estimation in a pulsed quantum optomechanical system
• Conditional dynamics of optomechanical two-tone backaction-evading measurements
• A Quantum Optomechanical Interface Beyond the Resolved Sideband Limit
• Quantum state preparation of a mechanical resonator using an optomechanical geometric phase
• Generation of mechanical interference fringes by multi-photon counting
• Growing macroscopic superposition states via cavity quantum optomechanics
• State preparation and tomography of a nanomechanical resonator with fast light pulses
• Optomechanical Entanglement under Pulse Drive
• Noise excess free record/upload of non-classical states to continuous-variable quantum memory
• Quantum and Classical Phases in Optomechanics
• Improving teleportation of continuous variables by local operations
• Pulsed quantum interaction between two distant mechanical oscillators
• Reduced decoherence using squeezing, amplification, and anti-squeezing
• Enabling entanglement distillation via optomechanics

Cited by in corpus (19)

• Massive quantum systems as interfaces of quantum mechanics and gravity
• Signatures of the quantum nature of gravity in the differential motion of two masses
• Cavity Optomechanics with Photonic Bound States in the Continuum
• Prospects for observing gravitational forces between nonclassical mechanical oscillators
• Two-mode Schrödinger-cat states with nonlinear optomechanics: generation and verification of non-Gaussian mechanical entanglement
• Non-Gaussian entanglement in gravitating masses: the role of cumulants
• Active-feedback quantum control of an integrated low-frequency mechanical resonator
• Preparation and Verification of Two-Mode Mechanical Entanglement Through Pulsed Optomechanical Measurements
• Optimal entanglement generation in optomechanical systems via Krotov control of covariance matrix dynamics
• Coherent feedback in optomechanical systems in the sideband-unresolved regime
• Optimal Fidelity Witnesses for Gravitational Entanglement
• Optimized mechanical quadrature squeezing beyond the 3-dB limit via a gradient-descent algorithm
• Electron-mediated entanglement of two distant macroscopic ferromagnets within a nonequilibrium spintronic device
• Entanglement engineering of optomechanical systems by reinforcement learning
• Enhancing mechanical entanglement in molecular optomechanics
• Kerr-enhanced optomechanical entanglement generation via reservoir design
• Moving mirror-field dynamics under intrinsic decoherence
• Moment expansion method for composite open quantum systems including a damped oscillator mode
• Bayesian optimization of non-classical optomechanical correlations