Gaussian entanglement induced by an extended thermal environment
arXiv:1307.4571 · doi:10.1103/PhysRevA.88.042303
Abstract
We study stationary entanglement among three harmonic oscillators which are dipole coupled to a one-dimensional or a three-dimensional bosonic environment. The analysis of the open-system dynamics is performed with generalized quantum Langevin equations which we solve exactly in Fourier representation. The focus lies on Gaussian bipartite and tripartite entanglement induced by the highly non-Markovian interaction mediated by the environment. This environment-induced interaction represents an effective many-parties interaction with a spatial long-range feature: a main finding is that the presence of a passive oscillator is detrimental for the stationary two-mode entanglement. Furthermore, our results strongly indicate that the environment-induced entanglement mechanism corresponds to uncontrolled feedback which is predominantly coherent at low temperatures and for moderate oscillator-environment coupling as compared to the oscillator frequency.
15 page, 6 figures
References in corpus (12)
- Entanglement in continuous variable systems: Recent advances and current perspectives
- General non-Markovian dynamics of open quantum systems
- Fundamental Aspects of Quantum Brownian Motion
- Non-Markovian entanglement dynamics of noisy continuous variable quantum channels
- Unitarily localizable entanglement of Gaussian states
- Thermal state entanglement in harmonic lattices
- Environment-induced two-mode entanglement in quantum Brownian motion
- Limitation of entanglement due to spatial qubit separation
- Incomplete pure dephasing of N-qubit entangled W states
- Theory of non-Markovian decay of a cascade atom in high-Q cavities and photonic band-gap materials
- Gaussian tripartite entanglement out of equilibrium
- Non-Markovian Dynamics and Entanglement in Quantum Brownian Motion
Cited by in corpus (14)
- Thermometry in the quantum regime: Recent theoretical progress
- Testing the validity of the local and global GKLS master equations on an exactly solvable model
- Low-temperature thermometry can be enhanced by strong coupling
- Bath-Induced Correlations Enhance Thermometry Precision at Low Temperatures
- Heisenberg-Langevin vs. quantum master equation
- Two distinguishable impurities in BEC: squeezing and entanglement of two Bose polarons
- Coherence and entanglement of mechanical oscillators mediated by coupling to different baths
- Distance and Coupling Dependence of Entanglement in the Presence of a Quantum Field
- Heat current control in trapped BEC
- Collective photon emission in solid state environments: Concatenating non-markovian and markovian dynamics
- Quantum dissipation of planar harmonic systems: Maxwell-Chern-Simons theory
- Non-Markovianity and memory of the initial state
- General recipe for immediate entanglement death-birth transitions via Bell states: environmental Heisenberg exchange as an example
- Quantum kinetic theory of flux-carrying Brownian particles