Atomtronics with holes: Coherent transport of an empty site in a triple-well potential

A. Benseny, S. Fernández-Vidal, J. Bagudà, R. Corbalán, A. Picón, L. Roso, G. Birkl, and J. Mompart
Phys. Rev. A 82, 013604 – Published 8 July 2010

Abstract

We investigate arrays of three traps with two fermionic or bosonic atoms. The tunneling interaction between neighboring sites is used to prepare multisite dark states for the empty site (i.e., the hole) which allows for the coherent manipulation of its external degrees of freedom. By means of an ab initio integration of the Schrödinger equation, we investigate the adiabatic transport of a hole between the two extreme traps of a triple-well potential. Furthermore, a quantum-trajectory approach based on the de Broglie–Bohm formulation of quantum mechanics is used to get physical insight into the transport process. Finally, we discuss the use of the hole for the construction of a coherent single hole diode and a coherent single hole transistor.

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  • Received 22 December 2009

DOI:https://doi.org/10.1103/PhysRevA.82.013604

©2010 American Physical Society

Authors & Affiliations

A. Benseny1, S. Fernández-Vidal1, J. Bagudà1, R. Corbalán1, A. Picón1,*, L. Roso2, G. Birkl3, and J. Mompart1

  • 1Departament de Física, Grup d’Òptica, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain
  • 2Centro de Láseres Pulsados (CLPU), E-37008 Salamanca, Spain
  • 3Institut für Angewandte Physik, Technische Universität Darmstadt, Schlossgartenstrasse 7, D-64289 Darmstadt, Germany

  • *Present address: Joint Institute for Laboratory Astrophysics, University of Colorado, Boulder, Colorado 80309-0440, USA.

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Vol. 82, Iss. 1 — July 2010

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