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Electrical Control of Uniformity in Quantum Dot Devices
- Publication Year :
- 2023
-
Abstract
- Highly uniform quantum systems are essential for the practical implementation of scalable quantum processors. While quantum dot spin qubits based on semiconductor technology are a promising platform for large-scale quantum computing, their small size makes them particularly sensitive to their local environment. Here, we present a method to electrically obtain a high degree of uniformity in the intrinsic potential landscape using hysteretic shifts of the gate voltage characteristics. We demonstrate the tuning of pinch-off voltages in quantum dot devices over hundreds of millivolts that then remain stable at least for hours. Applying our method, we homogenize the pinch-off voltages of the plunger gates in a linear array for four quantum dots, reducing the spread in pinch-off voltages by one order of magnitude. This work provides a new tool for the tuning of quantum dot devices and offers new perspectives for the implementation of scalable spin qubit arrays.<br />QCD/Veldhorst Lab<br />BUS/TNO STAFF<br />QCD/Scappucci Lab<br />QN/Veldhorst Lab
Details
- Database :
- OAIster
- Notes :
- English
- Publication Type :
- Electronic Resource
- Accession number :
- edsoai.on1379328106
- Document Type :
- Electronic Resource
- Full Text :
- https://doi.org/10.1021.acs.nanolett.2c04446