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arXiv · 1509.01001

Dynamic Entanglement Evolution of Two-qubit XYZ Spin Chain in Markovian Environment

Ren Yi-Chong·Fan Hong-Yi
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Abstract

We propose a new approach called Ket-Bra Entangled State (KBES) Method for converting master equation into Schr\"{o}dinger-like equation. With this method, we investigate decoherence process and entanglement dynamics induced by a $2$-qubit spin chain that each qubit coupled with reservoir. The spin chain is an anisotropy $XYZ$ Heisenberg model in the external magnetic field $B$, the corresponding master equation is solved concisely by KBES method; Furthermore, the effects of anisotropy, temperature, external field and initial state on concurrence dynamics is analyzed in detail for the case that initial state is Extended Wenger-Like(EWL) state. Finally we research the coherence and concurrence of the final state (namely the density operator for time tend to infinite)

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Ren Yi-Chong, Fan Hong-Yi. 2015-09-03. Dynamic Entanglement Evolution of Two-qubit XYZ Spin Chain in Markovian Environment. https://arxiv.org/abs/1509.01001

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