Please use this identifier to cite or link to this item: https://doi.org/10.1103/PhysRevA.84.022337
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dc.titleBasics of perfect communication through quantum networks
dc.contributor.authorKay, A.
dc.date.accessioned2014-11-28T05:00:46Z
dc.date.available2014-11-28T05:00:46Z
dc.date.issued2011-08-25
dc.identifier.citationKay, A. (2011-08-25). Basics of perfect communication through quantum networks. Physical Review A - Atomic, Molecular, and Optical Physics 84 (2) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevA.84.022337
dc.identifier.issn10502947
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/112386
dc.description.abstractPerfect transfer of a quantum state through a one-dimensional chain is now well understood, allowing one not only to decide whether a fixed Hamiltonian achieves perfect transfer but to design a suitable one. We are particularly interested in being able to design, or understand the limitations imposed upon, Hamiltonians subject to various naturally arising constraints such as a limited coupling topology with low connectivity (specified by a graph) and type of interaction. In this paper, we characterize the necessary and sufficient conditions for transfer through a network and describe some natural consequences such as the impossibility of routing between many different recipients for a large class of Hamiltonians and the limitations on transfer rate. We also consider some of the trade-offs that arise in uniformly coupled networks (both Heisenberg and XX models) between transfer distance and the size of the network as a consequence of the derived conditions. © 2011 American Physical Society.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1103/PhysRevA.84.022337
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentCENTRE FOR QUANTUM TECHNOLOGIES
dc.description.doi10.1103/PhysRevA.84.022337
dc.description.sourcetitlePhysical Review A - Atomic, Molecular, and Optical Physics
dc.description.volume84
dc.description.issue2
dc.description.page-
dc.description.codenPLRAA
dc.identifier.isiut000294264400010
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