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arXiv:1706.01141 · The European Physical Journal D

Measurement enhances long-distance entanglement generation in spin chains with dissipative processes

Morteza Rafiee

Published Sep 1, 2018• 2 citations
arXivHTMLPDF
DOI
10.1140/epjd/e2018-90297-1

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We propose two schemes to produce long-distance entanglement in a spin chain. The first is based on a controllable interaction system, one starts from an entangled kernel and adds weaken interaction spins to the boundary sites step by step, then the entanglement will be extended longer and longer and its value is equal to that of its kernel. The second is based on a uniform interaction (J) system with a bulk magnetic field (B) that is absent for the boundary qubits, as long as B|J > 5, one can obtain near perfect long distance entanglement. Ultra-low temperature is needed in both schemes.