Fast Quantum State Transfer and Entanglement Renormalization Using Long-Range Interactions

In short-range interacting systems, the speed at which entanglement can be established between two separated points is limited by a constant Lieb-Robinson velocity. Long-range interacting systems are capable of faster entanglement generation, but the degree of the speedup possible is an open questio...

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Bibliographic Details
Published in:Physical review letters 2017-10, Vol.119 (17), p.170503-170503, Article 170503
Main Authors: Eldredge, Zachary, Gong, Zhe-Xuan, Young, Jeremy T, Moosavian, Ali Hamed, Foss-Feig, Michael, Gorshkov, Alexey V
Format: Article
Language:English
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Summary:In short-range interacting systems, the speed at which entanglement can be established between two separated points is limited by a constant Lieb-Robinson velocity. Long-range interacting systems are capable of faster entanglement generation, but the degree of the speedup possible is an open question. In this Letter, we present a protocol capable of transferring a quantum state across a distance L in d dimensions using long-range interactions with a strength bounded by 1/r^{α}. If α
ISSN:0031-9007
1079-7114
1079-7114
DOI:10.1103/physrevlett.119.170503