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

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APS March Meeting 2021

Volume 66, Number 1

Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA

Session X30: Circuit Theory, Hamiltonian Analysis and Design Tools II

8:00 AM–11:00 AM, Friday, March 19, 2021

Sponsoring Unit: DQI
Chair: Peter Groszkowski, University of Chicago

Abstract: X30.00008 : Simulations of Charge Noise in Quantum Dot Qubits Due to Temperature Fluctuations*

9:48 AM–10:00 AM Live

Abstract

Presenter:

Dan Mickelsen
(Department of Physics and Astronomy, University of California, Irvine)

Authors:

Dan Mickelsen
(Department of Physics and Astronomy, University of California, Irvine)

Herve M. Carruzzo
(Department of Physics and Astronomy, University of California, Irvine)

Ruqian Wu
(Department of Physics and Astronomy, University of California, Irvine)

Clare Yu
(Department of Physics and Astronomy, University of California, Irvine)

Sue Nan Coppersmith
(School of Physics, University of New South Wales, Sydney, Australia)

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.

*University of California MRPI grant MRP-17-454755, and the National Science Foundation (NSF) through the University of Wisconsin Materials Research Science and Engineering Center (DMR-1720415). RW is supported by the Department of Energy (Grant No. DE-SC0019448).

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Bulletin of the American Physical Society

APS March Meeting 2021

Volume 66, Number 1

Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA

Session X30: Circuit Theory, Hamiltonian Analysis and Design Tools II

Abstract: X30.00008 : Simulations of Charge Noise in Quantum Dot Qubits Due to Temperature Fluctuations*

Presenter:

Authors:

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