Exact dynamics of quantum correlations of two qubits coupled to bosonic baths
arXiv:1303.1054 · doi:10.1088/1367-2630/15/10/103020
Abstract
The counter rotating-wave term (CRT) effects from the system-bath coherence on the dynamics of quantum correlation of two qubits in two independent baths and a common bath are systematically investigated. The hierarchy approach is extended to solve the relevant spin boson models with the Lorentzian spectrum, the exact dynamics for the quantum entanglement and quantum discord (QD) are evaluated, and the comparisons with previous ones under the rotating-wave approximation are performed. For the two independent baths, beyond the weak system-bath coupling, the CRT essentially changes the evolution of both entanglement and QD. With the increase of the coupling, the revival of the entanglement is suppressed dramatically and finally disappears, and the QD becomes smaller monotonically. For the common bath, the entanglement is also suppressed by the CRT, but the QD shows quite different behaviors, if initiated from the correlated Bell states. In the non-Markovian regime, the QD is almost not influenced by the CRT and generally finite in the long time evolution at any coupling, while in the Markovian regime, it is significantly enhanced with the strong coupling.
11 pages, 6 figures
References in corpus (19)
- Finite-Time Disentanglement via Spontaneous Emission
- Beyond the Jaynes-Cummings model: circuit QED in the ultrastrong coupling regime
- Sudden Death of Entanglement
- Experimental quantum computing without entanglement
- Non-Markovian effects on the dynamics of entanglement
- Quantum Open System Theory: Bipartite Aspects
- Robustness of quantum discord to sudden death
- Deep Strong Coupling Regime of the Jaynes-Cummings model
- Protecting entanglement via the quantum Zeno effect
- Quantum discord and quantum phase transition in spin chains
- Entanglement dynamics of two independent qubits in environments with and without memory
- Sudden death and sudden birth of entanglement in common structured reservoirs
- Dynamics of quantum correlations in two-qubit systems within non-Markovian environments
- Ultrahigh finesse Fabry-Perot superconducting resonator
- Operational Significance of Discord Consumption: Theory and Experiment
- Non-Markovian disentanglement dynamics of two-qubit system
- Performance of various correlation measures in quantum renormalization-group method: A case study of quantum phase transition
- Non-Markovian Decay of a Three Level Cascade Atom in a Structured Reservoir
- Entanglement dynamics of a two-qubit system coupled individually to Ohmic baths
Cited by in corpus (24)
- Preservation of the geometric quantum discord in noisy environments
- Quantum Zeno and anti-Zeno effects in quantum dissipative systems
- Symmetry and the critical phase of the two-bath spin-boson model: Ground-state properties
- Extracting Information from Qubit-Environment Correlations
- Rabi oscillations, decoherence, and disentanglement in a qubit-spin-bath system: exact dynamics
- Ultimate entanglement robustness of two-qubit states against general local noises
- Quantum Otto engine with quantum correlations
- Effects of counter-rotating-wave terms on the non-Markovianity in quantum open systems
- Robust fermionic-mode entanglement of a nanoelectronic system in non-Markovian environments
- Quantum correlations and speed limit of central spin system
- Quantum Zeno and anti-Zeno effects in open quantum systems
- Plasmon-assisted quantum control of distant emitters
- Impact of non-Markovian evolution on characterizations of quantum thermodynamics
- Entanglement instability in the interaction of two qubits with a common non-Markovian environment
- Effect of bath temperature on the decoherence of quantum dissipative systems
- Zeno and anti-Zeno effect in an open quantum system in the ultrastrong-coupling regime
- Stochastic decoupling approach to the quantum dissipative dynamics: Perturbative and non-perturbative treatments
- Succinct Description and Efficient Simulation of Non-Markovian Open Quantum Systems
- Zeno effect of the open quantum system in the presence of 1/f noise
- Protecting coherence by reservoir engineering: intense bath disturbance
- Interplay between external driving, dissipation and collective effects in the Markovian and non-Markovian regimes
- Quantum evolution speed in the finite-temperature bosonic environment
- Single-photon scattering controlled by an imperfect cavity
- Entanglement dynamics and performance of two-qubit gates for superconducting qubits under non-Markovian effects