CMOS Compatible Single Photon Sources based on SiGe Quantum Dots
Public support
Provider
Ministry of Education, Youth and Sports
Programme
—
Call for proposals
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Main participants
Masarykova univerzita / Přírodovědecká fakulta
Contest type
M2 - International cooperation
Contract ID
MSMT-9964/2018-2/1
Alternative language
Project name in Czech
CMOS Compatible Single Photon Sources based on SiGe Quantum Dots
Annotation in Czech
The efficient generation of quantum states of light is a vital task in Quantum Photonics. Current approaches are bulky and expensive with low generation rates and the few commercial single photon sources are either not compatible with telecoms standards, require cryogenic temperatures or are bulky benchtop devices. CUSPIDOR will develop a novel integrated photonic platform relying on a fully CMOS-compatible technology, which will provide compact and highly efficient sources of deterministic single photons at telecommunications wavelengths. Using quantum electro-dynamics principles, silicon-germanium quantum dots (QDs) in silicon will be optimised for high radiative efficiency at temperatures up to 300K. Ion implantation will be implemented during growth, modifying the electron wave function and improving the radiative recombination rate. Optimal and deterministic coupling of the QDs with high quality-factor resonators will be achieved by site controlled QD growth in combination with precisely aligned, lithographically defined photonic crystal resonators, allowing upscaling and a straight forward implementation of areas of identical single photon sources. Combining these sources with lateral p-i-n diodes will yield electrically triggered single photon emitters. By using the QD to provide a strong optical nonlinearity, a single photon source (SPS) will be realized via the implementation of an on-chip photon blockade. Quantum interference in a photonic molecule increases the system’s sensitivity providing a practical path to the first integrated photon blockade device - i.e a “holy grail” of the Quantum photonics community - and provide opportunities for coherent protocols not possible with a single quantum dot.
Scientific branches
R&D category
ZV - Basic research
OECD FORD - main branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
OECD FORD - secondary branch
10306 - Optics (including laser optics and quantum optics)
OECD FORD - another secondary branch
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CEP - equivalent branches <br>(according to the <a href="http://www.vyzkum.cz/storage/att/E6EF7938F0E854BAE520AC119FB22E8D/Prevodnik_oboru_Frascati.pdf">converter</a>)
BH - Optics, masers and lasers<br>BM - Solid-state physics and magnetism
Completed project evaluation
Provider evaluation
V - Vynikající výsledky projektu (s mezinárodním významem atd.)
Project results evaluation
During the CUSPIDOR project, effective methods for computation of intersticial SiGe quantum dot electronic structure were developed by MU. These were a method of parameter modification using DFT and the tight binding model. Those were connected to the multiparticle corrections using configuration interaction.
Solution timeline
Realization period - beginning
Apr 1, 2018
Realization period - end
Jun 30, 2022
Project status
U - Finished project
Latest support payment
Feb 22, 2021
Data delivery to CEP
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data delivery code
CEP23-MSM-8C-U
Data delivery date
Jun 28, 2023
Finance
Total approved costs
2,218 thou. CZK
Public financial support
2,218 thou. CZK
Other public sources
0 thou. CZK
Non public and foreign sources
0 thou. CZK