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Details of Grant 

EPSRC Reference: EP/S019324/1
Title: Multiplexed Quantum Integrated Circuits
Principal Investigator: Smith, Professor CG
Other Investigators:
Joyce, Dr H J Beri, Dr B Ritchie, Professor DA
Researcher Co-Investigators:
Dr K Delfanazari
Project Partners:
Australian National University (ANU) University of Strathclyde
Department: Physics
Organisation: University of Cambridge
Scheme: Standard Research
Starts: 01 March 2019 Ends: 28 February 2022 Value (£): 940,489
EPSRC Research Topic Classifications:
Condensed Matter Physics Electronic Devices & Subsys.
EPSRC Industrial Sector Classifications:
No relevance to Underpinning Sectors
Related Grants:
Panel History:
Panel DatePanel NameOutcome
26 Nov 2018 EPSRC ICT Prioritisation Panel November 2018 Announced
Summary on Grant Application Form
The low-temperature multiplexer for quantum devices has allowed competing theories regarding quantum transport in interacting low-dimensional systems to be tested against experiment and because of the large numbers of devices that can be tested at once, a statistical approach to quantum nano-device physics discovery can be used. We induced superconductivity in two-dimensional electron gases and are searching for Majorana fermions. In this project, we want to proceed on several fronts, all using integrated circuits of split-gate transistors, to explore new physics, new technology and new electronics. This project will be supplemented (by other local projects and by the input from others using our facilities) so that most of the following topics will be pursued over the next three years: (* = core part of this project)

1. A gigahertz multiplexer*

2. Superconducting/semiconducting integrated circuits including topological insulator material addressed using the multiplexer*

3. Nanowire integrated circuits coupled to superconductors for investigating how robust Majorana modes are and exploring whether they could be reliably used for quantum technology*

4. Independent biasing through specific charge storage on each gate

5. Nanoscale multiplexer

6. A voltage camera circuit on the micron-scale

7. Multiplexers with induced 2DEGs to reduce fluctuations*

8. Single electron pumping in quantum dots in parallel to provide high current high accuracy pumps for a current standard*

9. Setting up a facility for external users*
Key Findings
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Potential use in non-academic contexts
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Impacts
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Summary
Date Materialised
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Project URL:  
Further Information:  
Organisation Website: http://www.cam.ac.uk