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Photonic two-particle quantum walks in Su–Schrieffer–Heeger lattices

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Abstract

We report on the experimental demonstration of two-photon quantum walks at the edge of a photonic Su–Schrieffer–Heeger lattice and compare them to those observed when launching photons at the edge of a homogeneous lattice. Whereas at the topological edge, one of the photons primarily remains close to the edge, both photons penetrate freely from the trivial edge into the bulk. This behavior manifests also in the average inter-particle distance, which is significantly larger at the topological edge. Hence, for a given propagation length, the entangled two-photon state launched at the topological edge extends over a wider domain of the lattice.

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DOI:10.1364/PRJ.409005

所属栏目:Research Articles

基金项目:Alfried Krupp von Bohlen und Halbach-Stiftung10.13039/501100005306; Deutsche Forschungsgemeinschaft10.13039/501100001659;

收稿日期:2020-09-01

录用日期:2020-11-14

网络出版日期:2020-11-18

作者单位    点击查看

Friederike Klauck:Institute for Physics, University of Rostock, 18059 Rostock, Germany
Matthias Heinrich:Institute for Physics, University of Rostock, 18059 Rostock, Germany
Alexander Szameit:Institute for Physics, University of Rostock, 18059 Rostock, Germany

联系人作者:Alexander Szameit(alexander.szameit@uni-rostock.de)

备注:Alfried Krupp von Bohlen und Halbach-Stiftung10.13039/501100005306; Deutsche Forschungsgemeinschaft10.13039/501100001659;

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引用该论文

Friederike Klauck, Matthias Heinrich, and Alexander Szameit, "Photonic two-particle quantum walks in Su–Schrieffer–Heeger lattices," Photonics Research 9(1), A1 (2021)

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