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Erschienen in: Quantum Information Processing 11/2019

01.11.2019

Transmission of quantum states through disordered channels with dimerized defects

verfasst von: Guilherme M. A. Almeida, Marcelo L. Lyra, Francisco A. B. F. de Moura

Erschienen in: Quantum Information Processing | Ausgabe 11/2019

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Abstract

We study a quantum-state transfer protocol between two end spins of a disordered spin-1/2 chain. We particularly evaluate the performance of the channel when it is subjected to short-range correlated on-site fluctuations. This is implemented by generating a random distribution of dimer-like defects across the chain featuring a given on-site potential W. By numerically evaluating the system’s natural time evolution, we report the possibility of carrying out high-fidelity quantum-state transmission from one end to another given their local frequency is set \(\varepsilon \sim W\) and W is within the energy band of the defectless chain.

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Metadaten
Titel
Transmission of quantum states through disordered channels with dimerized defects
verfasst von
Guilherme M. A. Almeida
Marcelo L. Lyra
Francisco A. B. F. de Moura
Publikationsdatum
01.11.2019
Verlag
Springer US
Erschienen in
Quantum Information Processing / Ausgabe 11/2019
Print ISSN: 1570-0755
Elektronische ISSN: 1573-1332
DOI
https://doi.org/10.1007/s11128-019-2464-6

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