Decoherence and disorder in quantum walks: from ballistic spread to localization |
| |
Authors: | Schreiber A Cassemiro K N Poto?ek V Gábris A Jex I Silberhorn Ch |
| |
Institution: | Max Planck Institute for the Science of Light, Erlangen, Germany. Andreas.Schreiber@mpl.mpg.de |
| |
Abstract: | We investigate the impact of decoherence and static disorder on the dynamics of quantum particles moving in a periodic lattice. Our experiment relies on the photonic implementation of a one-dimensional quantum walk. The pure quantum evolution is characterized by a ballistic spread of a photon's wave packet along 28 steps. By applying controlled time-dependent operations we simulate three different environmental influences on the system, resulting in a fast ballistic spread, a diffusive classical walk, and the first Anderson localization in a discrete quantum walk architecture. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|