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https://www.um.edu.mt/library/oar/handle/123456789/99944
Title: | Multipartite entanglement transfer in spin chains |
Authors: | Apollaro, Tony John George Sanavio, Claudio Chetcuti, Wayne Jordan Lorenzo, Salvatore |
Keywords: | Data structures (Computer science) Information theory Quantum computers Quantum statistics Elementary particles (Physics) |
Issue Date: | 2020 |
Publisher: | Elsevier |
Citation: | Apollaro, T. J., Sanavio, C., Chetcuti, W. J., & Lorenzo, S. (2020). Multipartite entanglement transfer in spin chains. Physics Letters A, 384(15), 126306. |
Abstract: | We investigate the transfer of genuine multipartite entanglement across a spin- 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. |
URI: | https://www.um.edu.mt/library/oar/handle/123456789/99944 |
Appears in Collections: | Scholarly Works - FacSciPhy |
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Multipartite entanglement transfer in spin chains.pdf Restricted Access | 840.02 kB | Adobe PDF | View/Open Request a copy |
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