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

作　　者：FRIEDERIKE KLAUCK MATTHIAS HEINRICH ALEXANDER SZAMEIT 

机构地区：[1]Institute for Physics,University of Rostock,18059 Rostock,Germany

出　　处：《Photonics Research》2021年第1期I0003-I0009,共7页光子学研究（英文版）

基　　金：Alfried Krupp von Bohlen und HalbachStiftung;Deutsche Forschungsgemeinschaft(BL 574/13-1,SCHE 612/6-1,SZ 276/12-1,SZ 276/15-1,SZ 276/20-1)。

摘　　要：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 interparticle 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.

关 键 词：QUANTUM TOPOLOGICAL PARTICLE 

分 类 号：O734[理学—晶体学]