Congrats to Helio Huet, who defended his thesis on generating multipartite entanglement with semiconductor quantum dots. His results open paths to measurement-based & spin–optical quantum computing. Excited to see him continue in @quandela.bsky.social .👏🎓
#QuantumDots #Entanglement #PhDDefense
@petrsteindl.bsky.social presented today the team’s efforts to measure the Wigner function of our single photons!
#QuiDiQua #C2N #WignerFunction
📄New paper on ArXiv!
💡By mixing single photons and laser light, you can adaptively boost the QKD secret key rate (SKR) for short distances, and stay in the pure single-photon regime for longer links.
🔗 @yportella.bsky.social & @dfioretto.bsky.social , arxiv.org/abs/2510.26337
#QKD #QD #QDLight #C2N
🎓Congratulations to Hubert Lam on the defense of his PhD yesterday! 🎉
In his PhD, he pushed the Wigner-function measurement technique to be compatible with our fast QD emission and, for the first time, measured the Wigner function of QD-based emitters! ✨
#C2N #PhD #WignerFunction
⚡We’re beginning to mix single photons with laser light to explore new quantum applications!
📄In our recent paper (Lam et al., QST 10, 045061 (2025)), we present tools to quantify the interference strength between these two light fields — a key step toward controlled quantum–classical mixing.💡
🔭 During Fête de la Science at C2N, we gave a tour of our quantum optics lab and showed simple light experiments illustrating the principles we use every day — from interference to quantum phenomena! 💡 #FêteDeLaScience #C2N #Optics
Congratulations to Adria Medeiros Garay on the defense of his PhD today! He presented some of his work on spin-photon interface in QD-cavity devices, showcasing how such systems could serve as a backbone for a future quantum network. Good luck in your next career step at ICFO!
#ICFO #C2N #PhD
🎤 Etienne presented at OECS 2025 new results showing coherence in photon-number basis enables measuring spin state of charged-exciton QDs — advancing spin-photon interfaces 🚀✨
#Quantum #QuantumDot #OECS2025 #QuantumPhotonics #C2N
Adrià presented our work on heralding of a single spin via giant polarization rotations in a QD-based spin-photon interface 🌀🧭 A step towards scalable spin-photon quantum networks!
#QuantuMatter2025 #QuantumPhotonics #SpinPhotonInterface #QuantumDots #SingleSpin #QuantumNetworks #C2N
Petr presented our work on optimizing direct single-photon Wigner-function measurement 🌀🔍 Improving and accelerating quantum state characterization for solid-state light sources and photonic quantum technologies.
#QuantuMatter2025 #QuantumOptics #WignerFunction #SinglePhotons #QuantumDots #C2N
Yann gave a talk on how combining laser light and single photons can extend the capabilities of QKD protocols 🔐✨ Pushing the boundaries of secure quantum communication!
#QuantuMatter2025 #QKD #QuantumCommunication #SinglePhotons #C2N
Thibaut presented our recent work on noise spectroscopy of a micropillar-based single-photon source 🔬📡 Deeper insight into noise mechanisms in our emitters - essential for scaling-up!
#QuantuMatter2025 #SinglePhotons #QuantumDot #Micropillar #NoiseSpectroscopy #C2N #Quandela
Lara presented her poster on spin-photon entanglement for the generation of multiphotonic graph states 🧵🧠 Exciting progress toward scalable photonic quantum computing!
#QuantuMatter2025#QuantumComputing #SpinPhotonEntanglement #GraphStates #QuantumDots #Photonics #C2N #Quandela
Hubert presented our work on Wigner function reconstruction of non-Gaussian superposition states emitted from a quantum dot 🌀 A key step in characterizing solid-state quantum light for photonic quantum technologies!
#QuantuMatter2025 #QuantumOptics #QuantumDot #WignerFunction #NonGaussian #C2N
Etienne just gave his first talk at Quantum Matter 2025 in Grenoble! He presented our work on generating Fock-encoded superpositions using QD-based single photon sources—promising for quantum computing, communication & spin characterization. 🎤🧠
#QuantuMatter2025 #QuantumComputing #QuantumDot #C2N
Elianor presented her poster on the generation of photonic cluster states with linear optics ✨🔗 Advancing entanglement generation!
#QuantuMatter2025 #QuantumComputing #ClusterStates #SinglePhotons #C2N #Quandela
Helio shared new results on deterministic and reconfigurable graph state generation with a solid-state quantum emitter 💡🔗 Exciting step toward scalable photonic quantum computing! Published in Nat. Comm. 16, 4337 (2025)!
#QuantuMatter2025 #QuantumComputing #GraphStates #QuantumDot #C2N
Back from QuantuMatter 2025 in Grenoble! We shared new results toward photonic quantum computing using semiconductor quantum dots.
Great discussions—thanks to the organizers! Stay tuned for more insight!
#QuantuMatter2025 #QuantumDot #SinglePhotons #QuantumComputing #QuantumCommunication #C2N
Check this out ! quantumdot.eu/careers/
We are #hiring a #PhD to work on the nuclear #spin cooling for the generation of long #photon #cluster #states by a III-V #semiconductor #quantumdot (M/F)
Read more about the offer at quantumdot.eu/careers/
(2/2) We are #hiring an optical #engineer with a solid background in experimental #optics and #nano-photonics for the #fabrication of #single-photon sources using in situ #lithography techniques.
Details on the offer at quantumdot.eu/careers/
(1/2) We are #hiring a single-photon source #cleanroom #engineer - highly skilled in clean room #nanomicrofabrication techniques and experienced in basic characterisation of #semiconductor #heterostructures - for the #fabrication of single cavity #QuantumDot components.
Check quantumdot.eu/careers/
Jacqui Romero, #qudit expert @UQueensland, visited us on Feb 6, 2025. She covered #qudit research, #Laguerre-Gaussian modes, and her team’s 17-dit encoding and programmable gates. Our PhD students showed their work on #quantum-dot nonlinearity for photon generation.
#QuantumComputing #QuantumDots
Including interesting talks about switching from research into the business world. How to do it and the reasons why. @EricLangrognet @Zhinst @chipiron_mri
#ParisJussieu #CNRS #IleDeFrance #QuantumInnovation
Insightful event at the DIM QuanTiP Valorization Awareness Day 2023 @Sorbonne_Univ_ for our post-Doc Dario Fioretto and PhD students Antoine Henry, Prashant Ramesh and Mathias Pont.
And congrats to our two members Hubert Lam and Tim Hebenstreit for winning the poster prize!🎉
Certified randomness in a tight space: Demonstration of compact certified random number generation by combining a bright single photon source from @Quandela_SAS and a reconfigurable photonic chip. #CNRS #C2N #Contextuality #Perceval
arxiv.org/abs/2301.03536
High-fidelity generation of 4-photon GHZ states using a reconfigurable photonic circuit and our quantum dot sources. Including the demonstration of Bell-like inequality violation for certification and four-partite quantum secret sharing protocol on-chip.
🎉 New paper on the arxiv! 🎉
First step towards an efficient deterministic spin-photon interface using our quantum-dot-micropillar-system.
arxiv.org/abs/2212.03767
Here is the link to this beautiful paper 👉 :
arxiv.org/abs/2207.09881
Proud of Ilse Maillette de Buy Wenniger, Valentin Guichard, Antoine Henry, Francesco Hoch and Dario Fioretto for their participation to the #LOQCathon organized by @Quandela_SAS 🎉
