dc.identifier.uri |
http://dx.doi.org/10.15488/10404 |
|
dc.identifier.uri |
https://www.repo.uni-hannover.de/handle/123456789/10478 |
|
dc.contributor.author |
Nitsche, Thomas
|
|
dc.contributor.author |
Geib, Tobias
|
|
dc.contributor.author |
Stahl, Christoph
|
|
dc.contributor.author |
Lorz, Lennart
|
|
dc.contributor.author |
Cedzich, Christopher
|
|
dc.contributor.author |
Barkhofen, Sonja
|
|
dc.contributor.author |
Werner, Reinhard F
|
|
dc.contributor.author |
Silberhorn, Christine
|
|
dc.date.accessioned |
2021-02-16T12:48:33Z |
|
dc.date.available |
2021-02-16T12:48:33Z |
|
dc.date.issued |
2019 |
|
dc.identifier.citation |
Nitsche, T.; Geib, T.; Stahl, C.; Lorz, L.; Cedzich, C. et al.: Eigenvalue measurement of topologically protected edge states in split-step quantum walks. In: New Journal of Physics 21 (2019), Nr. 4, 43031. DOI: https://doi.org/10.1088/1367-2630/ab12fa |
|
dc.description.abstract |
We study topological phenomena of quantum walks by implementing a novel protocol that extends the range of accessible properties to the eigenvalues of the walk operator. To this end, we experimentally realise for the first time a split-step quantum walk with decoupling, which allows for investigating the effect of a bulk-boundary while realising only a single bulk configuration. The experimental platform is implemented with the well-established time-multiplexing architecture based on fibre-loops and coherent input states. The symmetry protected edge states are approximated with high similarities and we read-out the phase relative to a reference for all modes. In this way we observe eigenvalues which are distinguished by the presence or absence of sign flips between steps. Furthermore, the results show that investigating a bulk-boundary with a single bulk is experimentally feasible when decoupling the walk beforehand. |
eng |
dc.language.iso |
eng |
|
dc.publisher |
Bristol : Institute of Physics Publishing |
|
dc.relation.ispartofseries |
New Journal of Physics 21 (2019), Nr. 4 |
|
dc.rights |
CC BY 3.0 Unported |
|
dc.rights.uri |
https://creativecommons.org/licenses/by/3.0/ |
|
dc.subject |
bulk-boundary correspondence |
eng |
dc.subject |
decoupling |
eng |
dc.subject |
quantum walks |
eng |
dc.subject |
split-step |
eng |
dc.subject |
symmetry protected edge states |
eng |
dc.subject |
topological phenomena |
eng |
dc.subject |
Eigenvalues and eigenfunctions |
eng |
dc.subject |
Topology |
eng |
dc.subject |
bulk-boundary correspondence |
eng |
dc.subject |
decoupling |
eng |
dc.subject |
Edge state |
eng |
dc.subject |
Quantum walk |
eng |
dc.subject |
Split step |
eng |
dc.subject |
topological phenomena |
eng |
dc.subject |
Quantum theory |
eng |
dc.subject.ddc |
530 | Physik
|
ger |
dc.title |
Eigenvalue measurement of topologically protected edge states in split-step quantum walks |
|
dc.type |
Article |
|
dc.type |
Text |
|
dc.relation.issn |
1367-2630 |
|
dc.relation.doi |
https://doi.org/10.1088/1367-2630/ab12fa |
|
dc.bibliographicCitation.issue |
4 |
|
dc.bibliographicCitation.volume |
21 |
|
dc.bibliographicCitation.firstPage |
43031 |
|
dc.description.version |
publishedVersion |
|
tib.accessRights |
frei zug�nglich |
|