Efficient quantum transmission in multiple-source networks.

Abstract:

:A difficult problem in quantum network communications is how to efficiently transmit quantum information over large-scale networks with common channels. We propose a solution by developing a quantum encoding approach. Different quantum states are encoded into a coherent superposition state using quantum linear optics. The transmission congestion in the common channel may be avoided by transmitting the superposition state. For further decoding and continued transmission, special phase transformations are applied to incoming quantum states using phase shifters such that decoders can distinguish outgoing quantum states. These phase shifters may be precisely controlled using classical chaos synchronization via additional classical channels. Based on this design and the reduction of multiple-source network under the assumption of restricted maximum-flow, the optimal scheme is proposed for specially quantized multiple-source network. In comparison with previous schemes, our scheme can greatly increase the transmission efficiency.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Luo MX,Xu G,Chen XB,Yang YX,Wang X

doi

10.1038/srep04571

subject

Has Abstract

pub_date

2014-04-02 00:00:00

pages

4571

issn

2045-2322

pii

srep04571

journal_volume

4

pub_type

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