Multipartite entanglement transfer in spin chains
arXiv:2001.03529 · doi:10.1016/j.physleta.2020.126306
Abstract
We investigate the transfer of genuine multipartite entanglement across a spin-1/2 chain with nearest-neighbor XX-type interaction. We focus on the perturbative regime, where a block of spins is weakly coupled at each edge of a quantum wire, embodying the role of a multiqubit sender and receiver, respectively. We find that high-quality multipartite entanglement transfer is achieved at the same time that three excitations are transferred to the opposite edge of the chain. Moreover, we find that both a finite concurrence and tripartite negativity is attained at much shorter time, making GHZ-distillation protocols feasible. Finally, we investigate the robustness of our protocol with respect to non-perturbative couplings and increasing lengths of the quantum wire.
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Cited by in corpus (8)
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- Perturbatively-perfect many-body transfer
- Parallel entangling gate operations and two-way quantum communication in spin chains
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