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Simulations of Charge Noise in Quantum Dot Qubits Due to Temperature Fluctuations

ORAL

Abstract

Silicon quantum dot qubits show great promise but suffer from charge noise. It has recently been proposed that 1/f-like noise spectra can emerge from very small numbers of thermally activated two-level fluctuators in the presence of significant temperature fluctuations [1]. We present the results of Monte Carlo simulations of the noise of a two-level system modeled as a Heisenberg spin with a barrier to spin re-orientations in a bath with a fluctuating temperature.

[1] S. Ahn et al., arXiv:2007.03689.

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Presenters

  • Dan Mickelsen

    Department of Physics and Astronomy, University of California, Irvine, University of California, Irvine

Authors

  • Dan Mickelsen

    Department of Physics and Astronomy, University of California, Irvine, University of California, Irvine

  • Herve M. Carruzzo

    Department of Physics and Astronomy, University of California, Irvine, University of California, Irvine

  • Ruqian Wu

    Department of Physics and Astronomy, University of California, Irvine, Physics and Astronomy, University of California Irvine, University of California, Irvine

  • Clare Yu

    Department of Physics and Astronomy, University of California, Irvine, University of California, Irvine

  • Sue Nan Coppersmith

    School of Physics, University of New South Wales, Sydney, Australia, University of Wisconsin - Madison