4PHOTON — Novel Quantum Emitters monolithically grown on Si, Ge and III-V substrates

Results in brief

Novel Quantum Emitters monolithically grown on Si, Ge and III-V substrates

4PHOTON addresses the major disruptive technology of the near future: the Quantum Information Technology (QIT). 4PHOTON outcomes directly impact on the viability of QIT by providing fundamental know-how and trained researchers to this expanding field. As a matter of fact, QIT is an area of cutting-edge scientific research that has the potential to deliver huge benefits for the European economy. The researcher profile required by QIT is extremely multi-specialized, being required to tackle problems in fundamental quantum physics, optics, photonics and device fabrication (growth and processing). Thus inter‐disciplinary and intersectoral training of ESRs is needed for the future development of the technology, with strong interlink between academia and business. Three main targets are considered fundamental, by industries active in the field to pave the way to a successful impact of QIT on industry and society: (1) Nurture new skills and roles; (2) Expand quantum computing education programs; (3) Increase open innovation between academia and business. With these goals in mind, 4PHOTON forged a research and training network between the leading European groups working on the next generation of solid state QIT devices based on novel photonic materials. It is a vast and novel research area that lies at the crossroads of photonics, material science, quantum physics and nano-scale device fabrication. It combines challenges in the fabrication and understanding of efficient quantum emitters with tailored properties, in the development of new scientific equipment enabling advanced experiments and devices at the single/multiple quantum level. In particular, 4PHOTON research area is on the development and application of opto-electronic based QIT. The quantum techniques used by 4PHOTON partners provide an innovative approach which allow responding to current demands from industry. Based on the recent progress in quantum photonic devices achieved due to the work of the network beneficiaries in this domain, 4PHOTON unify the efforts of world-leading research and industrial EU groups in a well-structured research and training program in order to keep Europe at the highest level in the highly competitive field of nano-science and nano-technology.

Data: CORDIS, © European Union

Project objective

We propose to forge a partnership between the leading European groups working on the next generation of solid state quantum emitters based on novel growth methods such as Droplet Epitaxy. Future, practical Nano-photonics and Quantum Circuits applications demand semiconductor quantum dots that can be grown on substrates with different lattice parameters (Si, Ge, GaAs), different substrate orientations (such as (001) and (111)) and tuneable optical, electrical and spin properties. All these requirements are met by high quality quantum dots grown with Droplet based Epitaxy techniques, circumventing the limitations of currently available systems based on strain-driven dot self-assembly. This vast novel research area at the crossroads of photonics, material science, quantum physics and nano-scale device fabrication will allow delivering top level multidisciplinary training to 15 early stage researcher (ESRs). The successful training of the ESRs by leading academic and 3 full industrial partners will be crucial for achieving the headline goals of this first ever consortium on droplet dot devices: (1) Entangled light emitting diodes with droplet dots grown on (111) substrates (2) Electrically triggered, droplet dot based single photon sources on Si/Ge substrates (3) Strain tuning in droplet dots without wetting layer: photon polarization and single spin control (4) Droplet Dot based single photon sources for non- classical light storage devices based on hybrid quantum systems (dots & laser-cooled atoms). The training and research progress will be discussed and monitored during the 4 project meetings, 3 summer schools and the final international conference on Droplet Dot Devices, all of which are open to the whole scientific community. We expect this network, based on the solid collaboration between growth groups, microscopists, quantum optics experimentalists and theorists to explore the full potential of this emerging technology.

Original text from CORDIS.

Participants

UNIVERSITA' DEGLI STUDI DI MILANO-BICOCCA · MilanoCoordinatorItaly
ATTOCUBE SYSTEMS GmbH · HaarGermany
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS · ParisFrance
EPSRC III-V Semiconductor Technologies · SheffieldUnited Kingdom
IOFFE PHYSICO-TECHNICAL INSTITUTE OF THE RUSSIAN ACADEMY OF SCIENCES · ST PETERSBURGRussia
JULIUS-MAXIMILIANS-UNIVERSITAT WURZBURG · WuerzburgGermany
KUNGLIGA TEKNISKA HOEGSKOLAN · StockholmSweden
NATIONAL INSTITUTE FOR MATERIALS SCIENCE · TsukubaJapan
SINGLE QUANTUM BV · DelftNetherlands
TECHNISCHE UNIVERSITEIT EINDHOVEN · EindhovenNetherlands
THE UNIVERSITY OF SHEFFIELD · SHEFFIELDUnited Kingdom
TOSHIBA EUROPE LIMITED · STAINES UPON THAMESUnited Kingdom
UNIVERSITA DEGLI STUDI DI FIRENZE · FlorenceItaly
UNIVERSITAT BASEL · BaselSwitzerland
UNIVERSITE D'AIX MARSEILLE · MarseilleFrance
UNIVERSITY COLLEGE LONDON · LondonUnited Kingdom
UNIVERSITY OF HAMBURG · HamburgGermany

4PHOTON · Novel Quantum Emitters monolithically grown on Si, Ge and III-V substrates

Results in brief

Novel Quantum Emitters monolithically grown on Si, Ge and III-V substrates

Project objective

Participants

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