Exactly solvable model for the dynamics of two spin-1/2 particles embedded in separate spin star environments

Abstract

Exact analytical results for the dynamics of two interacting qubits each of which is embedded in its own spin star bath are presented. The time evolution of the concurrence and the purity of the two-qubit system is investigated for finite and infinite numbers of environmental spins. The effect of qubit-qubit interactions on the steady state of the central system is investigated

24 pages, 7 figures; comments welcome

References in corpus (9)

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Cited by in corpus (9)

• Disentanglement dynamics of interacting two qubits and two qutrits in an XY spin-chain environment with the Dzyaloshinsky-Moriya interaction
• Modulated Entanglement Evolution Via Correlated Noises
• Non-Markovian dynamics in a spin star system: The failure of thermalization
• Coherent Averaging
• A nontrivial bosonic representation of large spin systems at high temperatures
• Exact dynamics of one-qubit system in layered environment
• Aspects of the decoherence in high spin environments: Breakdown of the mean-field approximation
• Decay rates and decoherence of an interstitial two-level spin impurity in a ferromagnetic lattice
• Random spin distributions and the diffusion equation