Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session N46: Silicon Qubits III - Control and Readout
11:30 AM–2:30 PM,
Wednesday, March 6, 2024
Room: 200AB
Sponsoring
Unit:
DQI
Chair: Jiawei Wang, State Univ of NY - Buffalo
Abstract: N46.00009 : Oral: Numerical modeling of decoherence of entangled spin qubits during shuttling*
1:30 PM–1:42 PM
Presenter:
Aleksandr S Mokeev
(Delft University of Technology)
Authors:
Yuning Zhang
(Delft University of Technology)
Aleksandr S Mokeev
(Delft University of Technology)
Viatcheslav V Dobrovitski
(QuTech, Delft University of Technology)
However, realistic modeling of decoherence of several entangled qubits during the shuttling process remains an outstanding problem, since the noise affecting this system explicitly includes both time and space correlations, and generally cannot be reduced to a standard mathematical model of random process. We propose a new approach for describing the shuttled entangled qubits, employing the concept of random Ornstein-Uhlenbeck sheet, a Gaussian stochastic field explicitly denependent on time and space coordinates. We provide several numerical approaches to modeling decoherence under such noise, justify their validity, and assess their performance. We present the results of representative simulations for shuttling of few-qubit entangled states, and discuss extension of these methods to other decoherence sources, such as the noise hot spots and 1/f noise.
[1] A. Noiri et al., Nature Comm. 13, 5740 (2022)
[2] F. van Riggelen-Doelman et al., arXiv:2308.02406 (2023)
[3] I. Seidler et al., npj Qu. Inf. 8, 100 (2022)
[4] A. M. J. Zwerver et al., PRX Quantum 4, 030303 (2023)
*The work is supported by Dutch Research Council (NWO) and by ARO/LPS QC-S5 program.
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