Boson Sampling is a task that is conjectured to be computationally hard for a classical computer, but which can be efficiently solved by linear-optical interferometers with Fock state inputs. Significant advances have been reported in the last few years, with demonstrations of small- and medium-scale devices, as well as implementations of variants such as Gaussian … Leggi tutto

Mutually entangled multi-photon states are at the heart of all-optical quantum technologies. While impressive progresses have been reported in the generation of such quantum light states using free space apparatus, high-fidelity high-rate on-chip entanglement generation is crucial for future scalability. In this work, we use a bright quantum-dot based single-photon source to demonstrate the high … Leggi tutto

Engineering single-photon states endowed with Orbital Angular Momentum (OAM) is a powerful tool for quantum information photonic implementations. Indeed, thanks to its unbounded nature, OAM is suitable to encode qudits allowing a single carrier to transport a large amount of information. Nowadays, most of the experimental platforms use nonlinear crystals to generate single photons through … Leggi tutto

Ernesto F. Galvão is joining the 1-day workshop of the Engineering Physics Doctoral Programme at the University of Porto talking about photonic technologies. Title of the presentation: Non-classicality and quantum information Link: https://www.phoqusing.eu/wp-content/uploads/2023/03/poster.jpg

Read the press release: https://physicsworld.com/a/how-indistinguishable-are-indistinguishable-photons-new-optical-interferometer-puts-a-number-on-it/

Ernesto F. Galvão is joining the photonic quantum computing hackathon event (“LOQCathon”) organized by Quandela. Title of the presentation: Alternative algorithms for simulation of linear optics: Feynman path sums, permanents of sparse matrices Link: https://qics.sorbonne-universite.fr/en/evenements-qics/loqcathon-qics/quandela Programme: https://www.phoqusing.eu/wp-content/uploads/2023/03/loqcathon_schedule.pdf

Taira Giordani is presenting “Reconfigurable continuously-coupled photonic integrated circuits for Boson Sampling”. Programme: https://www.conferencemanager.dk/iciqp2022

A joint paper between IFN-CNR, CNRS and Sapienza on a new method for the quantification of n-photon indistinguishability has been published in PRX! We report on a universal method to measure the genuine indistinguishability of n-photons – a crucial parameter that determines the accuracy of optical quantum computing. Our approach relies on a low-depth cyclic … Leggi tutto