Hyper-entanglement from ultra-bright photon pair sources
Public support
Provider
Ministry of Education, Youth and Sports
Programme
—
Call for proposals
—
Main participants
Univerzita Palackého v Olomouci / Přírodovědecká fakulta
Contest type
M2 - International cooperation
Contract ID
MSMT-9964/2018-2/2
Alternative language
Project name in Czech
Hyper-entanglement from ultra-bright photon pair sources
Annotation in Czech
We will fabricate and exploit an entirely novel photonic device platform for the generation of highly indistinguishable and entangled photon pairs with near-unity extraction efficiency. The envisioned implementation consists of a quantum dot (QD) embedded in a novel photonic structure. The device, features (i) electro-elastic fields to electrically tune any QD for entanglement, (ii) Purcell enhancement of 10 over a bandwidth of 10 nm to boost the photon indistinguishability and the degree of entanglement up to the maximum, and (iii) near-unity extraction efficiency. When driven under two-photon resonant excitation, we predict that the device will generate polarization entangled photons pairs at rates of 500 MHz and, in combination with time-bin entanglement, hyper-entangled quantum states at rates close to 25 MHz. We will then experimentally exploit two of these devices in the protocol of quantum teleportation, where we foresee to reach the rate of 100 MHz. Last but not the least, we will theoretically and experimentally investigate the device performance under the influences of losses and noise in both free space and fibre based quantum networks, bringing us therefore closer to the establishment of an operating quantum system for real-life quantum communication.
Scientific branches
R&D category
ZV - Basic research
OECD FORD - main branch
10306 - Optics (including laser optics and quantum optics)
OECD FORD - secondary branch
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
OECD FORD - another secondary branch
10306 - Optics (including laser optics and quantum optics)
CEP - equivalent branches <br>(according to the <a href="http://www.vyzkum.cz/storage/att/E6EF7938F0E854BAE520AC119FB22E8D/Prevodnik_oboru_Frascati.pdf">converter</a>)
BE - Theoretical physics<br>BH - Optics, masers and lasers
Completed project evaluation
Provider evaluation
V - Vynikající výsledky projektu (s mezinárodním významem atd.)
Project results evaluation
The HYPER-U-P-S collaboration developed photonic nanostructures generating photon pairs from quantum dots. QOLO team at Palacký University developed new methods to measure and encode the generated photons for full utilization in quantum communications.
Solution timeline
Realization period - beginning
Jan 2, 2018
Realization period - end
Jan 31, 2021
Project status
U - Finished project
Latest support payment
Feb 26, 2020
Data delivery to CEP
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data delivery code
CEP22-MSM-8C-U
Data delivery date
Jun 29, 2022
Finance
Total approved costs
3,597 thou. CZK
Public financial support
3,597 thou. CZK
Other public sources
0 thou. CZK
Non public and foreign sources
0 thou. CZK