Title :
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
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;
Conference_Titel :
Lasers and Electro-Optics Europe (CLEO EUROPE/EQEC), 2011 Conference on and 12th European Quantum Electronics Conference
Conference_Location :
Munich
Print_ISBN :
978-1-4577-0533-5
Electronic_ISBN :
Pending
DOI :
10.1109/CLEOE.2011.5943396
