Format

Send to:

Choose Destination
See comment in PubMed Commons below
Science. 2012 Apr 6;336(6077):55-8. doi: 10.1126/science.1218448. Epub 2012 Mar 8.

A 2D quantum walk simulation of two-particle dynamics.

Author information

  • 1Applied Physics, University of Paderborn, Warburger Straße 100, 33098 Paderborn, Germany. andreas.schreiber@uni-paderborn.de

Abstract

Multidimensional quantum walks can exhibit highly nontrivial topological structure, providing a powerful tool for simulating quantum information and transport systems. We present a flexible implementation of a two-dimensional (2D) optical quantum walk on a lattice, demonstrating a scalable quantum walk on a nontrivial graph structure. We realized a coherent quantum walk over 12 steps and 169 positions by using an optical fiber network. With our broad spectrum of quantum coins, we were able to simulate the creation of entanglement in bipartite systems with conditioned interactions. Introducing dynamic control allowed for the investigation of effects such as strong nonlinearities or two-particle scattering. Our results illustrate the potential of quantum walks as a route for simulating and understanding complex quantum systems.

PMID:
22403179
[PubMed]
Free full text
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for HighWire
    Loading ...
    Write to the Help Desk