Published on *QUROPE* (http://qurope.eu)

Tue, 2014-01-28 20:38 - Tomas Rybar [1]

Date:

2013-05-07 - 2014-01-28

Reference:

Phys. Rev. Lett. 110, 190601

We report on the experimental realization of electric quantum walks, which mimic the effect of an electric field on a charged particle in a lattice. Starting from a textbook implementation of discrete-time quantum walks, we introduce an extra operation in each step to implement the effect of the field. The recorded dynamics of such a quantum particle exhibits features closely related to Bloch oscillations and interband tunneling. In particular, we explore the regime of strong fields, demonstrating contrasting quantum behaviors: quantum resonances versus dynamical localization depending on whether the accumulated Bloch phase is a rational or irrational fraction of 2π.

**Links:**

[1] http://qurope.eu/users/ifeelfishy

[2] http://prl.aps.org/abstract/PRL/v110/i19/e190601

[3] http://qurope.eu/category/qipc/qipc

[4] http://qurope.eu/category/qics/10-quantum-computation/12-simulations

[5] http://qurope.eu/category/attribute/highlight

[6] http://qurope.eu/category/attribute/result

[7] http://qurope.eu/category/projects/ips/siqs

[8] http://qurope.eu/category/qics/10-quantum-computation/11-algorithms/1170w-quantum-random-walks

[9] http://qurope.eu/category/qics/10-quantum-computation/15-implementations-quantum-optics/1520ol-optical-lattices