Electric Quantum Walks with Individual Atoms

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Genske, M. et al.: Electric Quantum Walks with Individual Atoms. In: Physical Review Letters 110 (2013), Nr. 19, 190601. DOI: https://doi.org/10.1103/PhysRevLett.110.190601

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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.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.
License of this version: Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden.
Document Type: article
Publishing status: publishedVersion
Issue Date: 2013
Appears in Collections:Fakultät für Mathematik und Physik

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1 image of flag of Germany Germany 41 78.85%
2 image of flag of China China 3 5.77%
3 image of flag of Brazil Brazil 2 3.85%
4 image of flag of United States United States 1 1.92%
5 image of flag of Thailand Thailand 1 1.92%
6 image of flag of Norway Norway 1 1.92%
7 image of flag of India India 1 1.92%
8 image of flag of Hungary Hungary 1 1.92%
9 image of flag of France France 1 1.92%

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