Quantum walk coherences on a dynamical percolation graph

Fabian Elster, Sonja Barkhofen, Thomas Nitsche, Jaroslav Novotný, A. Gábris, Igor Jex, Christine Silberhorn

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Coherent evolution governs the behaviour of all quantum systems, but in nature it is often subjected to influence of a classical environment. For analysing quantum transport phenomena quantum walks emerge as suitable model systems. In particular, quantum walks on percolation structures constitute an attractive platform for studying open system dynamics of random media. Here, we present an implementation of quantum walks differing from the previous experiments by achieving dynamical control of the underlying graph structure. We demonstrate the evolution of an optical time-multiplexed quantum walk over six double steps, revealing the intricate interplay between the internal and external degrees of freedom. The observation of clear non-Markovian signatures in the coin space testifies the high coherence of the implementation and the extraordinary degree of control of all system parameters. Our work is the proof-of-principle experiment of a quantum walk on a dynamical percolation graph, paving the way towards complex simulation of quantum transport in random media.

Original languageEnglish
Article number13495
JournalScientific Reports
Volume5
DOIs
Publication statusPublished - Aug 27 2015

Fingerprint

platforms
degrees of freedom
signatures
simulation

ASJC Scopus subject areas

  • General

Cite this

Elster, F., Barkhofen, S., Nitsche, T., Novotný, J., Gábris, A., Jex, I., & Silberhorn, C. (2015). Quantum walk coherences on a dynamical percolation graph. Scientific Reports, 5, [13495]. https://doi.org/10.1038/srep13495

Quantum walk coherences on a dynamical percolation graph. / Elster, Fabian; Barkhofen, Sonja; Nitsche, Thomas; Novotný, Jaroslav; Gábris, A.; Jex, Igor; Silberhorn, Christine.

In: Scientific Reports, Vol. 5, 13495, 27.08.2015.

Research output: Contribution to journalArticle

Elster, F, Barkhofen, S, Nitsche, T, Novotný, J, Gábris, A, Jex, I & Silberhorn, C 2015, 'Quantum walk coherences on a dynamical percolation graph', Scientific Reports, vol. 5, 13495. https://doi.org/10.1038/srep13495
Elster F, Barkhofen S, Nitsche T, Novotný J, Gábris A, Jex I et al. Quantum walk coherences on a dynamical percolation graph. Scientific Reports. 2015 Aug 27;5. 13495. https://doi.org/10.1038/srep13495
Elster, Fabian ; Barkhofen, Sonja ; Nitsche, Thomas ; Novotný, Jaroslav ; Gábris, A. ; Jex, Igor ; Silberhorn, Christine. / Quantum walk coherences on a dynamical percolation graph. In: Scientific Reports. 2015 ; Vol. 5.
@article{383cee9e3ee24232a1ea26bd1577b2d1,
title = "Quantum walk coherences on a dynamical percolation graph",
abstract = "Coherent evolution governs the behaviour of all quantum systems, but in nature it is often subjected to influence of a classical environment. For analysing quantum transport phenomena quantum walks emerge as suitable model systems. In particular, quantum walks on percolation structures constitute an attractive platform for studying open system dynamics of random media. Here, we present an implementation of quantum walks differing from the previous experiments by achieving dynamical control of the underlying graph structure. We demonstrate the evolution of an optical time-multiplexed quantum walk over six double steps, revealing the intricate interplay between the internal and external degrees of freedom. The observation of clear non-Markovian signatures in the coin space testifies the high coherence of the implementation and the extraordinary degree of control of all system parameters. Our work is the proof-of-principle experiment of a quantum walk on a dynamical percolation graph, paving the way towards complex simulation of quantum transport in random media.",
author = "Fabian Elster and Sonja Barkhofen and Thomas Nitsche and Jaroslav Novotn{\'y} and A. G{\'a}bris and Igor Jex and Christine Silberhorn",
year = "2015",
month = "8",
day = "27",
doi = "10.1038/srep13495",
language = "English",
volume = "5",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "Nature Publishing Group",

}

TY - JOUR

T1 - Quantum walk coherences on a dynamical percolation graph

AU - Elster, Fabian

AU - Barkhofen, Sonja

AU - Nitsche, Thomas

AU - Novotný, Jaroslav

AU - Gábris, A.

AU - Jex, Igor

AU - Silberhorn, Christine

PY - 2015/8/27

Y1 - 2015/8/27

N2 - Coherent evolution governs the behaviour of all quantum systems, but in nature it is often subjected to influence of a classical environment. For analysing quantum transport phenomena quantum walks emerge as suitable model systems. In particular, quantum walks on percolation structures constitute an attractive platform for studying open system dynamics of random media. Here, we present an implementation of quantum walks differing from the previous experiments by achieving dynamical control of the underlying graph structure. We demonstrate the evolution of an optical time-multiplexed quantum walk over six double steps, revealing the intricate interplay between the internal and external degrees of freedom. The observation of clear non-Markovian signatures in the coin space testifies the high coherence of the implementation and the extraordinary degree of control of all system parameters. Our work is the proof-of-principle experiment of a quantum walk on a dynamical percolation graph, paving the way towards complex simulation of quantum transport in random media.

AB - Coherent evolution governs the behaviour of all quantum systems, but in nature it is often subjected to influence of a classical environment. For analysing quantum transport phenomena quantum walks emerge as suitable model systems. In particular, quantum walks on percolation structures constitute an attractive platform for studying open system dynamics of random media. Here, we present an implementation of quantum walks differing from the previous experiments by achieving dynamical control of the underlying graph structure. We demonstrate the evolution of an optical time-multiplexed quantum walk over six double steps, revealing the intricate interplay between the internal and external degrees of freedom. The observation of clear non-Markovian signatures in the coin space testifies the high coherence of the implementation and the extraordinary degree of control of all system parameters. Our work is the proof-of-principle experiment of a quantum walk on a dynamical percolation graph, paving the way towards complex simulation of quantum transport in random media.

UR - http://www.scopus.com/inward/record.url?scp=84940520147&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84940520147&partnerID=8YFLogxK

U2 - 10.1038/srep13495

DO - 10.1038/srep13495

M3 - Article

VL - 5

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

M1 - 13495

ER -