Integrating Superconducting Qubits with Two-dimensional Electron Systems

Información del proyecto

SQALE

Identificador del acuerdo de subvención: 750777

DOI

10.3030/750777

Proyecto finalizado el 31 Diciembre 2018

Fecha de la firma de la CE 23 Febrero 2017

Fecha de inicio 1 Marzo 2017

Fecha de finalización 28 Febrero 2019

Financiado con arreglo a

• EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions

Coste total

€ 200 194,80

Aportación de la UE

€ 200 194,80

Coordinado por

KOBENHAVNS UNIVERSITET
Denmark

Periodic Reporting for period 1 - SQALE (Integrating Superconducting Qubits with Two-dimensional Electron Systems)

Período documentado: 2017-03-01 hasta 2019-02-28

Resumen del contexto y de los objetivos generales del proyecto

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 still remains a major challenge. One emerging solution makes use of the semiconductor switch technology that is behind ordinary computer chips found in mobile phones and laptops. Proof-of-concept devices have proved extremely promising, but integrating these new materials in a scalable fashion needed to be established. In this project we addressed this by fabricating scalable hybrid circuits from these new materials and testing their performance.

Trabajo realizado desde el comienzo del proyecto hasta el final del período abarcado por el informe y los principales resultados hasta la fecha

I was able to readout the state of different types of qubits using microwave spectroscopy and demonstrate coherence times in the few μs range. Using the deeper direct knowledge of quantum control techniques and experience working directly with industrial partners I am now establishing a group to work in this area.

Avances que van más allá del estado de la técnica e impacto potencial esperado (incluida la repercusión socioeconómica y las implicaciones sociales más amplias del proyecto hasta la fecha)

By developing a new type of qubit we progressed beyond state-of-the-art and helped the prospects for scaling superconducting quantum computing beyond a few hundred qubits. The transformative impact is hard to overstate due to the expectation from European governments, industry, and increasingly the public, to be able to harness the power of quantum computing for protecting secure communications and simulating small molecules within the next decade.

Array of superconducting qubits and comparison between transmon, nanowire and 2DEG gatemon.