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Spin Qubits Silicon Quantum Computing

Automated long-range compensation of an rf quantum dot sensor

arXiv
Authors: Joseph Hickie, Barnaby van Straaten, Federico Fedele, Daniel Jirovec, Andrea Ballabio, Daniel Chrastina, Giovanni Isella, Georgios Katsaros, Natalia Ares

Year

2023

Paper ID

54184

Status

Preprint

Abstract Read

~2 min

Abstract Words

119

Citations

N/A

Abstract

Charge sensing is a sensitive technique for probing quantum devices, of particular importance for spin qubit readout. To achieve good readout sensitivities, the proximity of the charge sensor to the device to be measured is a necessity. However, this proximity also means that the operation of the device affects, in turn, the sensor tuning and ultimately the readout sensitivity. We present an approach for compensating for this cross-talk effect allowing for the gate voltages of the measured device to be swept in a 1 V x 1 V window while maintaining a sensor configuration chosen by a Bayesian optimiser. Our algorithm is a key contribution to the suite of fully automated solutions required for the operation of large quantum device architectures.

Why This Paper Matters

  • This paper contributes to the Spin Qubits & Silicon Quantum Computing research area in the Quantum Articles archive.
  • It adds a 2023 reference point for readers tracking recent quantum research.
  • Charge sensing is a sensitive technique for probing quantum devices, of particular importance for spin qubit readout.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2310.02135 [2] arXiv https://arxiv.org/abs/2310.02135 [3] Publisher https://arxiv.org/abs/2310.02135

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