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

Elianor presented her poster on the generation of photonic cluster states with linear optics ✨🔗 Advancing entanglement generation!

#QuantuMatter2025 #QuantumComputing #ClusterStates #SinglePhotons #C2N #Quandela

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

🎉 New paper on the arxiv! 🎉

We investigated how Hong-Ou-Mandel interference changes for imperfect single photon sources, and found it is critical to know where your noise comes from.#photonics #quantum #QuantumComputing #SinglePhotons

arxiv.org/abs/2005.01743

Overcomplete quantum tomography of a path-entangled two-photon state Path-entangled $N$-photon states are key resources for quantum enhanced metrology and quantum imaging, as well as quantum computation. However, the quantum tomography of path-entangled indistinguishable photons is still in its infancy. We propose and implement a quantum tomographical method to characterize path-entangled two-photon NOON states, which can be extended to arbitrary $N$. To access both the populations and the coherences of the path-encoded density matrix, a single ancilla spatial mode is introduced, and photon correlations are performed as a function of a single phase within an interferometer. We characterize a two-photon state generated through the Hong-Ou-Mandel interference of indistinguishable single photons emitted by a semiconductor quantum dot and show that an overcomplete data set reveals spatial coherences that could be otherwise hidden due to limited statistics. We finally extract the truly indistinguishable part of the density matrix and identify the main origin for the reduced degree of entanglement.

It took some time... but finally our paper on the NOON quantum tomography is published! Congrats to Lorenzo and the rest of the team! #overcompleted #QDs #singlephotons #quantumtomography

link.aps.org/doi/10.1103/Ph…

REMEMBER: Late-Poster submission deadline for the ICIQP2018: August 30th, 2018
#iciqp2018 #integratedphotonics #singlephotons #quantumoptics #quantumphotonics

Today we welcome Sofia Pazzagli, giving a seminar on organic molecules for integrated quantum photonics. #singlephotons

Good morning! Another splendorous sunny day in our Campus of Marcoussis. Have a nice week full of #quantumphotonics! 😃 #c2n #cnrs #quantumdots #marcoussis #quantumphysics #singlephotons #MondayMotivation

Yesterday, a day to remember! Lorenzo, we wish you all the best in your next destination 🙃

Jump if you like single indistinguishable photons! #c2n #cnrs #quantumdots #singlephotons #quantumoptics #cqed #quantumtechnologies

Happening now: Lorenzo De Santis presenting his PhD studies “Single photons generation and manipulation with semiconductor quantum dot devices” #soutenancethese #c2n #cnrs #quantumdots #singlephotons

The Single Photon Workshop is starting! #singlephotons #boulder #colorado