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The dynamics of a double-dot charge qubit embedded in a suspended phonon cavity

  • Mesoscopic and Nanoscale Systems
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Abstract

We theoretically investigate the dynamics of a double dot charge qubit that is embedded inside a suspended semiconductor slab in terms of a perturbation treatment based on a unitary transformation. The phonon-induced decoherence is analyzed in detail after a derivation of phonon spectral density. It is shown that a charge qubit of high quality can be obtained due to the inhibition of the electron-phonon coupling in the confined structure of the slab.

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Authors and Affiliations

  1. Department of Physics, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China

    W.-M. Ju, K.-D. Zhu, P.-H. Huang & H. Zheng

Authors
  1. W.-M. Ju
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  2. K.-D. Zhu
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  3. P.-H. Huang
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  4. H. Zheng
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Correspondence to W.-M. Ju.

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Ju, WM., Zhu, KD., Huang, PH. et al. The dynamics of a double-dot charge qubit embedded in a suspended phonon cavity. Eur. Phys. J. B 72, 417–422 (2009). https://doi.org/10.1140/epjb/e2009-00369-x

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  • DOI: https://doi.org/10.1140/epjb/e2009-00369-x

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