Quantum transport in magneto-optical double-potential wells

Ivan H. Deutsch, Paul M. Alsing, John Grondalski, Shohini Ghose, David L. Haycock, Poul S Jessen

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

We review the quantum transport of ultra-cold alkali atoms trapped in a one-dimensional optical lattice of double-potential wells, engineered through a combination of ac-Stark shifts and Zeeman interactions. The system is modelled numerically through analysis of the bandstructure and integration of the time-dependent Schrodinger equation. By these means we simulate coherent control of the atomic wavepackets. We present results from ongoing experiments on laser-cooled caesium, including the demonstration of quantum state preparation and preliminary evidence for coherent tunnelling. Entanglement between the internal and motional degrees of freedom allows us to access the tunneling dynamics by Stern-Gerlach measurements of the ground state magnetic populations. A scheme to extend this into a full reconstruction of the density matrix for the ground state angular momentum is presented. We further consider the classical dynamics of our system, which displays deterministic chaos. This has important implications for the distinction between classical and quantum mechanical transport.

Original languageEnglish (US)
Pages (from-to)633-644
Number of pages12
JournalJournal of Optics B: Quantum and Semiclassical Optics
Volume2
Issue number5
DOIs
StatePublished - Oct 2000

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ground state
display devices
cesium
chaos
alkalies
angular momentum
degrees of freedom
preparation
shift
lasers
atoms
interactions

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Atomic and Molecular Physics, and Optics

Cite this

Quantum transport in magneto-optical double-potential wells. / Deutsch, Ivan H.; Alsing, Paul M.; Grondalski, John; Ghose, Shohini; Haycock, David L.; Jessen, Poul S.

In: Journal of Optics B: Quantum and Semiclassical Optics, Vol. 2, No. 5, 10.2000, p. 633-644.

Research output: Contribution to journalArticle

Deutsch, Ivan H. ; Alsing, Paul M. ; Grondalski, John ; Ghose, Shohini ; Haycock, David L. ; Jessen, Poul S. / Quantum transport in magneto-optical double-potential wells. In: Journal of Optics B: Quantum and Semiclassical Optics. 2000 ; Vol. 2, No. 5. pp. 633-644.
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