Perfect Quantum Routing in Regular Spin Networks

Details Perfect Quantum Routing in Regular Spin Networks Perfect Quantum Routing in Regular Spin Networks

2010-07-16

arxiv.org/abs/1007.2786v2

Phys. Rev. Lett. 106, 020503 (2011)

Physics

Quantum Physics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.106.020503

Regular families of coupled quantum networks are described such the unknown state of a qubit can be perfectly routed from any node to any other node in a time linear in the distance. Unlike previous constructions, the transfer can be achieved perfectly on a network that is local on any specified number of spatial dimensions. The ability to route the state, and the regularity of the networks, vastly improve the utility of this scheme in comparison to perfect state transfer schemes. The structures can also be used for entanglement generation.

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