Corpus ID: 118897199

Phonon Cavity Models for Quantum Dot Based Qubits

  title={Phonon Cavity Models for Quantum Dot Based Qubits},
  author={Till Vorrath and Stefan Debald and Bernhard K. Kramer and Tobias Brandes},
  journal={arXiv: Mesoscale and Nanoscale Physics},
Phonon 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… 
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