Entanglement between qubits induced by a common environment with a gap

Abstract

We study a system of two qubits interacting with a common environment, described by a two-spin boson model. We demonstrate two competing roles of the environment: inducing entanglement between the two qubits and making them decoherent. For the environment of a single harmonic oscillator, if its frequency is commensurate with the induced two-qubit coupling strength, the two qubits could be maximally entangled and the environment could be separable. In the case of the environment of a bosonic bath, the gap of its spectral density function is essential to generate entanglement between two qubits at equilibrium and for it to be used as a quantum data bus.

accepted for publication in Physical Review A

References in corpus (11)

• Entanglement of Formation of an Arbitrary State of Two Qubits
• Cavity quantum electrodynamics for superconducting electrical circuits: an architecture for quantum computation
• Entanglement of a Pair of Quantum Bits
• Quantum state engineering with Josephson-junction devices
• Decoherence Free Subspaces for Quantum Computation
• Preserving coherence in quantum computation by pairing quantum bits
• Creation of Entanglement by Interaction with a Common Heat Bath
• Environment Induced Entanglement in Markovian Dissipative Dynamics
• Tunable Non-local Spin Control in a Coupled Quantum Dot System
• Separable states can be used to distribute entanglement
• Entanglement of an impurity and conduction spins in the Kondo model

Cited by in corpus (26)

• Dynamics of the entanglement between two oscillators in the same environment
• Open-System Dynamics of Entanglement
• Multiqubit Spectroscopy of Gaussian Quantum Noise
• Dynamical phases for the evolution of the entanglement between two oscillators coupled to the same environment
• Entanglement between charge qubits induced by a common dissipative environment
• Distance dependence of entanglement generation via a bosonic heat bath
• Off-resonant entanglement generation in a lossy cavity
• Dynamical decoupling sequences for multi-qubit dephasing suppression and long-time quantum memory
• Multi-mode entanglement of N harmonic oscillators coupled to a non-Markovian reservoir
• Negative-Temperature State Relaxation and Reservoir-Assisted Quantum Entanglement in Double Spin Domain Systems
• Continuous variables approach to entanglement creation and processing
• Generation of long-living entanglement between two distant three-level atoms in non-Markovian environments
• Entanglement instability in the interaction of two qubits with a common non-Markovian environment
• Generalized uncertainty relations and entanglement dynamics in quantum Brownian motion models
• Exact dynamics of the homogeneous two-qubit $XXZ$ central spin model with the spin bath prepared in superpositions of symmetric Dicke states
• Entanglement generation between distant spins via quasilocal reservoir engineering
• Decoherence and Entanglement Dynamics of Coupled Qubits
• Using squeezed field to preserve two-atom entanglement against spontaneous emissions
• Modelling of quantum information processing with Ehrenfest guided tra jectories: a case study
• Optomechanical quantum entanglement mediated by acoustic phonon fields
• Radiation induced interaction potential of two qubits strongly coupled with a quantized electromagnetic field
• Genuine Multipartite Entanglement induced by a Thermal Acoustic Reservoir
• Dynamical Decoupling in Common Environment
• Emergence of robust gaps in 2D antiferromagnets via additional spin-1/2 probes
• Quantum Separability of Thermal Spin One Boson Systems
• Oscillating Entropy and Spin Precession in the Ensemble of Qubits Interacting with Thermal Systems