Back to Search
Start Over
Electrical Control of Uniformity in Quantum Dot Devices
- Source :
- Nano Letters: a journal dedicated to nanoscience and nanotechnology, 23(7)
- 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.
- Subjects :
- Quantum Physics
Condensed Matter - Mesoscale and Nanoscale Physics
Mechanical Engineering
FOS: Physical sciences
quantum dot
spin qubit
Bioengineering
General Chemistry
Condensed Matter Physics
uniformity
hysteresis
Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
General Materials Science
Quantum Physics (quant-ph)
Subjects
Details
- Language :
- English
- ISSN :
- 15306984
- Volume :
- 23
- Issue :
- 7
- Database :
- OpenAIRE
- Journal :
- Nano Letters: a journal dedicated to nanoscience and nanotechnology
- Accession number :
- edsair.doi.dedup.....84490b4c5f60ddfb5b295b2072ad5fa9