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SQALE

Integrating Superconducting Qubits with Two-dimensional Electron Systems

Total Cost €

0

EC-Contrib. €

0

Partnership

0

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 SQALE project word cloud

Explore the words cloud of the SQALE project. It provides you a very rough idea of what is the project "SQALE" about.

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Project "SQALE" data sheet

The following table provides information about the project.

Coordinator
KOBENHAVNS UNIVERSITET 

Organization address
address: NORREGADE 10
city: KOBENHAVN
postcode: 1165
website: www.ku.dk

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Denmark [DK]
 Total cost 200˙194 €
 EC max contribution 200˙194 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2016
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2017
 Duration (year-month-day) from 2017-03-01   to  2019-02-28

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    KOBENHAVNS UNIVERSITET DK (KOBENHAVN) coordinator 200˙194.00

Map

 Project objective

Computers that use quantum superposition and entanglement are set to revolutionise how the world stores, processes, and communicates information. At the heart of quantum computers are building blocks known as qubits. Despite huge progress over the last decade, building a large number of interacting qubits protected from the environment remains a major challenge. One emerging solution makes use of elements comprising semiconducting nanowires with superconducting contacts. These profit from electric-field control and scalable methods to couple qubits. One natural implementation would be to use a two-dimensional electron gas (2DEG) as the semiconducting element. Recent measurements on indium arsenide 2DEG Josephson junctions are extremely promising, but the microwave response of 2DEGs is unknown and the substrate/gate dielectrics might limit qubit performance. To address these challenges I will fabricate scalable hybrid Josephson junctions in different 2DEGs. I will then readout the state of excitations in the 2DEG using microwave spectroscopy. Finally, I demonstrate operation of a 2DEG qubit with coherence times in the few μs range. What qualifies me to carry out this research is my experience with low-temperature measurements of nanodevices. To establish a group exploiting new discoveries in quantum technologies I require a deeper direct knowledge of quantum control techniques and experience working directly with industrial partners. I will acquire these skills by working at the Centre for Quantum Devices (QDev) at the University of Copenhagen under the supervision of Prof. Charles Marcus, a world-leader in the field. I will learn new research skills related to sophisticated microwave circuits while gaining valuable experience working in collaboration with top scientists at Microsoft Station Q. Introducing new 2D materials could also open exciting new collaborations with QDev and create future platforms for realising topological phases of matter.

 Publications

year authors and title journal last update
List of publications.
2018 Lucas Casparis, Malcolm R. Connolly, Morten Kjaergaard, Natalie J. Pearson, Anders Kringhøj, Thorvald W. Larsen, Ferdinand Kuemmeth, Tiantian Wang, Candice Thomas, Sergei Gronin, Geoffrey C. Gardner, Michael J. Manfra, Charles M. Marcus, Karl D. Petersson
Superconducting gatemon qubit based on a proximitized two-dimensional electron gas
published pages: 915-919, ISSN: 1748-3387, DOI: 10.1038/s41565-018-0207-y
Nature Nanotechnology 13/10 2019-07-19

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