Bypassing state initialisation in perfect state transfer protocols on spin-chains

Details Bypassing state initialisation in perfect state transfer protocols on spin-chains Bypassing state initialisation in perfect state transfer protocols on spin-chains

2011-02-08

arxiv.org/abs/1102.1685v1

LNCS 6519, 168 (2011)

Physics

Quantum Physics

8 pages, 2 figures, RevTeX4

Scientific paper

Although a complete picture of the full evolution of complex quantum systems would certainly be the most desirable goal, for particular Quantum Information Processing schemes such an analysis is not necessary. When quantum correlations between only specific elements of a many-body system are required for the performance of a protocol, a more distinguished and specialised investigation is helpful. Here, we provide a striking example with the achievement of perfect state transfer in a spin chain without state initialisation, whose realisation has been shown to be possible in virtue of the correlations set between the first and last spin of the transmission-chain.

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