Non-Gaussian macroscopic entanglement of motion in a hybrid electromechanical device
arXiv:1907.07537 · doi:10.1103/PhysRevA.100.023845
Abstract
We propose a scheme for entangling the motion of two massive objects in a hybrid electromechanical architecture. The entanglement is generated due to the interaction of two mechanical oscillators with a mediating superconducting qubit. We show that the generated macroscopic entangled states are non-Gaussian and its lifetime is limited by coherence time of the qubit. The entanglement is attainable in a wide range of parameters with appropriate control of the qubit. We confirm performance of our scheme by numerically solving the quantum optical master equation including sources of noise. The effect of imperfections, such as asymmetries in the coupling rates as well as mechanical thermal noise are studied and shown how they affect the amount and lifetime of the entangled state. Due to the nonlinear nature of the qubit, the initial Gaussian state of mechanical resonators evolves into a quasi-stationary non-Gaussian state, which is essential for universal quantum information processing in continuous variable systems. This work, therefore, provides the first step towards a universal continuous variable quantum network.
arXiv comment9 pages, 6 figures
References in corpus (56)
- A computable measure of entanglement
- Gaussian Quantum Information
- Charge insensitive qubit design derived from the Cooper pair box
- QuTiP 2: A Python framework for the dynamics of open quantum systems
- The logarithmic negativity: A full entanglement monotone that is not convex
- Observation of high coherence in Josephson junction qubits measured in a three-dimensional circuit QED architecture
- Experimental long-lived entanglement of two macroscopic objects
- Universal Quantum Computation with Continuous-Variable Cluster States
- A Spin Entanglement Witness for Quantum Gravity
- Continuous variable quantum information: Gaussian states and beyond
- Entangling macroscopic oscillators exploiting radiation pressure
- On the impossibility of distilling Gaussian states with Gaussian operations
- Reconstruction of non-classical cavity field states with snapshots of their decoherence
- Entangled massive mechanical oscillators
- Preparation of Nonclassical States in Cavities with a Moving Mirror
- Entanglement and decoherence of a micromechanical resonator via coupling to a Cooper box
- Quantum acoustics with superconducting qubits
- Continuous-variable teleportation improvement by photon subtraction via conditional measurement
- Gaussian transformations and distillation of entangled Gaussian states
- Black-box superconducting circuit quantization
- Ponderomotive Control of Quantum Macroscopic Coherence
- Hybrid circuit cavity quantum electrodynamics with a micromechanical resonator
- Generation of Optical Coherent State Superpositions by Number-Resolved Photon Subtraction from Squeezed Vacuum
- Millisecond charge-parity fluctuations and induced decoherence in a superconducting qubit
- Two-mode squeezed states in cavity optomechanics via engineering of a single reservoir
- Quantifying non-Gaussianity for quantum information
- The optomechanical instability in the quantum regime
- Robust concurrent remote entanglement between two superconducting qubits
- Bringing entanglement to the high temperature limit
- The optimal cloning of quantum coherent states is non-Gaussian
- Enhanced entanglement of two different mechanical resonators via coherent feedback
- Macroscopic quantum entanglement in modulated optomechanics
- Cavity Attenuators for Superconducting Qubits
- Generation and detection of large and robust entanglement between two different mechanical resonators in cavity optomechanics
- Quantum transducers: Integrating Transmission Lines and Nanomechanical Resonators via Charge Qubits
- Realistic continuous-variable quantum teleportation with non-Gaussian resources
- Dissipative optomechanical preparation of macroscopic quantum superposition states
- Bulk and surface loss in superconducting transmon qubits
- Parametric coupling between macroscopic quantum resonators
- Multimode theory of measurement-induced non-Gaussian operation on wideband squeezed light
- Phonon number sensitive electromechanics
- Cooling of mechanical motion with a two level system: the high temperature regime
- Spin-Mechanical Scheme with Color Centers in Hexagonal Boron Nitride Membranes
- Robustness of non-Gaussian entanglement against noisy amplifier and attenuator environments
- Quantum State Engineering with Circuit Electromechanical Three-Body Interactions
- Generation of cluster states in optomechanical quantum systems
- Interfacing planar superconducting qubits with high overtone bulk acoustic phonons
- Entangling the motion of two optically trapped objects via time-modulated driving fields
- Conditional measurements on multimode pairwise entangled states from spontaneous parametric downconversion
- Quantum non-Gaussianity and secure quantum communication
- Microwave degenerate parametric down-conversion with a single cyclic three-level system in circuit QED
- Time-dependent Fröhlich transformation approach for two-atom entanglement generated by successive passage through a cavity
- Interference effects in hybrid cavity optomechanics
- Deterministic preparation of highly non-classical macroscopic quantum states
- Non-Gaussian states by conditional measurements
- Heralded entangled coherent states between spatially separated massive resonators