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Coherent control of interacting electrons in quantum dots via navigation in the energy spectrum

G. E. Murgida·D. A. Wisniacki·P. I. Tamborenea
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Abstract

Quantum control of the wave function of two interacting electrons confined in quasi-one-dimensional double-well semiconductor structures is demonstrated. The control strategies are based on the knowledge of the energy spectrum as a function of an external uniform electric field. When two low-lying levels have avoided crossings our system behaves dynamically to a large extent as a two-level system. This characteristic is exploited to implement coherent control strategies based on slow (adiabatic passage) and rapid (diabatic Landau-Zener transition) changes of the external field. We apply this method to reach desired target states that lie far in the spectrum from the initial state.

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G. E. Murgida, D. A. Wisniacki, P. I. Tamborenea. 2007-07-23. Coherent control of interacting electrons in quantum dots via navigation in the energy spectrum. https://doi.org/10.1103/physrevlett.99.036806

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