Observation of topologically protected bound states in photonic quantum walks

Author

Kitagawa, Takuya ; Broome, Matthew A. ; Fedrizzi, Alessandro ; Rudner, Mark S. ; Berg, Erez ; Kassal, Ivan ; Aspuru-Guzik, Alan ; Demler, Eugene ; White, Andrew G.

Author_Institution

Dept. of Phys., Harvard Univ., Cambridge, MA, USA

fYear

2011

fDate

22-26 May 2011

Firstpage

1

Lastpage

1

Abstract

The authors study the topological properties of such a system: a modified version of the canonical discrete-time quantum walk on a line. The authors use a previously demonstrated photonic setup to implement a split-step quantum walk, as shown in the paper. The quantum walker is encoded in the orthogonal polarization components of heralded single photons, which we created via spontaneous parametric downconversion.

Keywords

bound states; light polarisation; optical frequency conversion; photons; quantum optics; canonical discrete-time quantum walk; orthogonal polarization components; photonic quantum walks; photonic setup; single photons; split-step quantum walk; spontaneous parametric downconversion; topological properties; topologically protected bound states; Imaging; Lattices; Optical retarders; Photonics; Physics; Shape;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Europe (CLEO EUROPE/EQEC), 2011 Conference on and 12th European Quantum Electronics Conference

Conference_Location

Munich

ISSN

Pending

Print_ISBN

978-1-4577-0533-5

Electronic_ISBN

Pending

Type

conf

DOI

10.1109/CLEOE.2011.5943396

Filename

5943396