🤩 Join the World Quantum Day Event at Urania in Berlin upcoming Monday, April 14!

We‘ll celebrate the return of our quantum light source after its year-long roundtrip within „QuanTour“ through Europe 🎯+⚛️+🇪🇺=🥳

#QuanTour #QTorch #SUPERquantum
@worldquantumday.bsky.social

I hope you have enough feed to read for some time and that you enjoyed what we have prepared for you this week.

Greetings from Laboratory for Optical Spectroscopy of Nanostructures at Wrocław University of Science and Technology :).

May the source be with you!

#QTorch #QuanTour

Group of colloidal nanostructures collnano.pwr.edu.pl synthesizes, functionalizes and studies (spectroscopy and microscopy) colloidal QDs for PV, inks for 3D printing of displays, LEDs and printable optoelectronics
Spin-off: qnatechnology.com
Project: quantera.eu/disco/
#Physics #QTorch #QuanTour 🧪

Quantum photonic integrated circuits at 1550 nm
qpic1550-project.eu q circuits compatible with fibers, efficient coupling of light between photonic components, min losses in q signal processing, unique properties of SiN for ultra-low loss circuit pathways + InP active devices
#Physics #QTorch 🧪

EQUAISE: sources created spatially and spectrally resonant with circular Bragg-grating microcavity for efficient light extraction and integrated onto micro-machined piezoelectric devices for controlling their emission properties independently by strain engineering.
#Physics 🧪 #QTorch

Another group working with quantum emitters syperek.wppt.pwr.edu.pl
Project EQUAISE combines mechanics and electrochemistry to deform and shape two-dimensional membranes made of TMDs at the nanoscale and transform them into site-controlled single photon sources equaise.pwr.edu.pl
🧪 #QTorch #Physics

Together with technological partners we investigate III-V QDs integration with silicon platform (monolitic growth we are talking about):
siliconqd.pwr.edu.pl
Find out how it is done:
pubs.acs.org/doi/
arxiv.org/abs/2407.108...

#QTorch #QuanTour #Physics 🧪

JCMwave - Complete Finite Element Technology for Optical Simulations JCMsuite - the complete nano-optics software package for the analysis and simulation of electromagnetic waves, elasticity and heat conduction.

Partners of QD-Sense project:
jcmwave.com
www.toptica-eagleyard.com/company-high...
www.tu.berlin/en/agquantum...
p.lodz.pl/en/about-tul...
www.epigap-osa.com/projects/
www.airoptic.pl/about-us/res...

Call: Polish-Berlin-Brandenburg projects on photonics.

#QTorch #QuanTour #Physics 🧪

QD-Sense Cost-efficient gas sensor system based on wavelength-tunable quantum dot VCSEL arrays. The goal of the Berlin-Polish project is to develop an innovative, low-cost, high-precision and high-reliability....

If you like R&D projects more we develop chip of QD VCSELs with different emission wavelengths thanks to monolithic high contrast grating on top, for the water spectroscopy sensor to be put together by Airoptic company. Project QD-Sense: jcmwave.com/company/proj...
#QTorch #QuanTour #Physics 🧪

Performance of the nanopost single-photon source: beyond the single-mode model We present a detailed analysis of the physics governing the collection efficiency and the Purcell enhancement of the nanopost single-photon source. We show that a standard single-mode Fabry–Pérot mode...

Check out why it is important to include more modes in description of photonic structures and check out what are the benefits of the nanopost geometry:
pubs.rsc.org/en/content/a...
#QTorch #QuanTour #Physics 🧪

Project website: kfd.pwr.edu.pl/figanti/
Antimonide-based QDs are telecom single-photon emitters:
advanced.onlinelibrary.wiley.com/doi/full/10....
arxiv.org/abs/2404.06083
They emisison redshifts when In is added to GaSb QD material:
iopscience.iop.org/article/10.1...
#Physics #QTorch #QuanTour 🧪

FiGAnti Fibre-Coupled GaSb Quantum Dot Tunable Single-Photon Sources for Field Deployed Quantum Key Distribution

With another team we are exploring new platform for 1.55 um non-classical light sources - Antimonides - quantum dots grown via local droplet etching.
Project FiGAnti: quantera.eu/figanti/
How the QDs are grown:
pubs.aip.org/aip/apm/arti... pubs.acs.org/doi/full/10....

#Physics #QuanTour #QTorch 🧪

QCEED project partners:
www.ucc.ie/en/
www.muni.cz/en
www.cea.fr/english
pwr.edu.pl/en/
www.cnr.it/en
www.3-5lab.fr/index.php
www.day-one.biz
More about the project: www.qceed.eu/about
🧪 #Physics #QTorch #QuanTour

EIC Pathfinder project Quantum Dot coupling engineering (and dynamic spin decoupling/deep nuclei cooling): 2-dimensional cluster state generation for quantum information processing (QCEED) Breaking barriers in quantum phot...

Check out also our project QCEED (Pathfinder) - we teamed up with University College Cork (coordinator), Masaryk University, Consiglio Nazionale Delle Ricerche, CEA Grenoble, III-V Lab and Day One Society to develop a platform to creaste 2D cluster states
www.qceed.eu
🧪 #Physics #QTorch #QuanTour

Optical Frequency Comb Spectroscopy Group from Wrocław Tech realizes research and research and development projects:
www.ncn.gov.pl/en/przyklady...
and they funded a spin-off company:
mode-locked.com/about-us
#QuanTour #QTorch #Physics 🧪

Warsaw impressions part 2. I left Warsaw and heading to central Poland now.
Two songs about Warsaw for you:
youtu.be/59JGY-K0BeQ?...
youtu.be/ePNUSmH3dMI?...

#QTorch #QuanTour

Warsaw impressions part 1.

#QTorch #QuanTour

It's Friday afternoon so it's time for our periodic "youth meeting" where PhD students from our group talk about more or less scientific and academic topics over coffee and sweets 😍
/Tomek
#QuanTour #QTorch

Each PhD student has its own desk. Mine is quite a fancy one tbh 😊
/Tomek
#QuanTour #QTorch

One of the most important places on the campus is definitely "Trumienka" bakery which translates to "the Coffin" as it's located next to a funeral parlour. Their sweet buns and pizza slices are a true fuel for students however sometimes you need to wait in a pretty long line
/Tomek
#QuanTour #QTorch

Zincblende InAsxP1–x/InP Quantum Dot Nanowires for Telecom Wavelength Emission InAsxP1–x quantum dots (QDs) in InP nanowires (NWs) have been realized as a platform for emission at telecom wavelengths. These QDs are typically grown in NWs with the wurtzite crystal phase, but in this case, ultrathin diameters are required to achieve defect-free heterostructures, making the structures less robust. In this work, we demonstrate the growth of pure zincblende InAsxP1–x QDs in InP NWs, which enabled an increase in NW diameters to about 45 nm, achieved by employing Au-assisted vapor liquid solid growth in a chemical beam epitaxy system. We studied the growth of InP/InAsxP1–x heterostructures with different compositions to control the straight growth along the ⟨100⟩ direction and to tune the emission wavelength. Interestingly, we found that the growth mechanism for pure InAs QDs is different compared to that for InAsxP1–x alloy QDs. This allowed us to optimize different growth protocols to achieve straight growth of the final QD NWs. We successfully obtained the growth of InAsxP1–x QDs with a composition in the range of x = 0.24–1.00. By means of microphotoluminescence measurements, we demonstrate the tunability of the emission in dependence of the InAsxP1–x QD composition and morphology, remarkably observing an emission at the telecom O-band for a 10 nm thick QD with 80% of As content.

QD-NWs are grown in CNR Nanoscience in Pisa by Giada Bucci supervised by Valentina Zannier in the group of Lucia Sorba via vapour-liquid-solid mode in chemical beam epitaxy
pubs.acs.org/doi/10.1021/...
www.nano.cnr.it/researcher-p...
This is a part of QCEED project www.qceed.eu
#QTorch #QuanTour

Tomorrow and half Saturday the Youngsters will entertain you. You already had a pleasure to meet Tomek today. He is a PhD student, first year, working on InAsP quantum dots in InP nanowires. He is doing optical measurements and optimizing NW geometry with FDTD calc. (Lumerical)
#QTorch #QuanTour

Tomorrow still on Warsaw. Rain. But also kick-off of the EUCentral project cdn.prod.website-files.com/5ee9d656ecaa...
You can read more at:
www.scilit.com/publications...

#QTorch #QuanTour

I can now relax in Warsaw. It is the only city on Poland with subway. Check the map below for more details ;). Warsaw is definately a vertical city.
Also today: www.kopernik.org.pl/en/node/3107 lecture of Artur Ekert 'Security for the paranoid ones'
#QTorch #QuanTour

The transfer is official.
#QTorch #QuanTour

They also work on quantum computer with Politechnika Warszawska. They provide system for addressing each of 20 ions Independent my and to couple pair of them to increase the computational power. Politechnika develops ion-based quantum computer.
#QTorch #QuanTour

We gave the source to Military University of Technology. We got picked up from the station - very nice gesture. Thank you! Of course we needed special pass to get in. They developed QKD system at TRL9, quaantum random numer generator and look at their Military coloured Alice ;).
#QTorch #QuanTour

And after 1st year we'll be conducting our own classes. Can't wait... 😬
/Tomek
#QTorch #QuanTour

In general, PhD students at WrocTech during first 2 years have to do 60h of elective classes, 60h of English, 30h of research skills, 45h of didactic abilities/personal development, 60h of new trends in physics and a reporting seminar on PhD progress.
/Tomek
#QTorch #QuanTour

Today I had a lecture about how to talk about science in a popular way so as to be understood by the general public. Very useful for this project 😉
/Tomek
#QTorch #QuanTour