Phonon Cavity Models for Quantum Dot Based Qubits

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dc.creatorVorrath, T.
dc.creatorDebald, S.
dc.creatorKramer, B.
dc.creatorBrandes, T.
dc.date2002-08-26
dc.date.accessioned2026-07-07T02:46:59Z
dc.date.available2026-07-07T02:46:59Z
dc.descriptionPhonon cavities are believed to be the next step towards a control of dephasing in semiconductor quantum dot `qubits'. In this paper, we discuss two models for phonon cavities - a surface acoustic wave (SAW) inter-digitated transducer on an infinite half-space, and an elastic thin slab. The inelastic current through double quantum dots in non-perfect SAW cavities exhibits a gap at small energies and is completely suppressed in a perfect, infinite system. In the free-standing slab model, van Hove singularities evolve in the phonon spectral density. We find that these singularities cause additional side peaks in the inelastic current.
dc.description8 pages, 3 figures, Proceedings of the 26th ICPS (2002), Edinburgh
dc.identifierhttps://arxiv.org/abs/cond-mat/0208493
dc.identifierhttp://arxiv.org/abs/cond-mat/0208493
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/19840
dc.subjectMesoscale and Nanoscale Physics
dc.titlePhonon Cavity Models for Quantum Dot Based Qubits
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