Multipartite entanglement transfer in spin chains

Salvatore Lorenzo, Tony J.G. Apollaro, Salvatore Lorenzo, Claudio Sanavio, Wayne Jordan Chetcuti

Risultato della ricerca: Articlepeer review

3 Citazioni (Scopus)

Abstract

We investigate the transfer of genuine multipartite entanglement across a spin-1/2 chain with nearest-neighbour 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.
Lingua originaleEnglish
pagine (da-a)126306-
Numero di pagine7
RivistaPHYSICS LETTERS A
Volume384
Stato di pubblicazionePublished - 2020

All Science Journal Classification (ASJC) codes

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