Coherent backscattering and forward-scattering peaks in the quantum kicked rotor

G. Lemarié, Cord A. Müller, D. Guéry-Odelin, and C. Miniatura
Phys. Rev. A 95, 043626 – Published 19 April 2017

Abstract

We propose and analyze an experimental scheme using the quantum kicked rotor to observe the newly predicted coherent forward-scattering peak together with its long-known twin brother, the coherent backscattering peak. Contrary to coherent backscattering, which arises already under weak-localization conditions, coherent forward scattering is only triggered by Anderson or strong localization. So far, coherent forward scattering has not been observed in conservative systems with elastic scattering by spatial disorder. We propose to turn to the quantum kicked rotor, which has a long and successful history as an accurate experimental platform to observe dynamical localization, i.e., Anderson localization in momentum space. We analyze the coherent forward-scattering effect for the quantum kicked rotor by extensive numerical simulations, both in the orthogonal and unitary class of disordered quantum systems, and show that an experimental realization involving phase-space rotation techniques is within reach of state-of-the-art cold-atom experiments.

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  • Received 13 January 2017

DOI:https://doi.org/10.1103/PhysRevA.95.043626

©2017 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & OpticalCondensed Matter, Materials & Applied Physics

Authors & Affiliations

G. Lemarié1, Cord A. Müller1,2, D. Guéry-Odelin3, and C. Miniatura4,5,6,7,8

  • 1Laboratoire de Physique Théorique, IRSAMC, Université de Toulouse, 31062 Toulouse, CNRS, UPS, France
  • 2Fachbereich Physik, Universität Konstanz, 78457 Konstanz, Germany
  • 3Laboratoire Collisions, Agrégats, Réactivité, IRSAMC, Université de Toulouse, 31062 Toulouse, CNRS, UPS, France
  • 4MajuLab, CNRS-UNS-NUS-NTU International Joint Research Unit, UMI 3654, Singapore
  • 5Centre for Quantum Technologies, National University of Singapore, 3 Science Drive 2, Singapore 117543, Singapore
  • 6Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542, Singapore
  • 7School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
  • 8Université Côte d'Azur, CNRS, INLN; 1361 route des Lucioles, 06560 Valbonne, France

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Issue

Vol. 95, Iss. 4 — April 2017

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