At the Conference Quantum Matter 2023 in Madrid, Pascale Senellart, Ilse Maillette de Buy Wenniger and Juan Rafael Alvarez Velasque presented: – Semiconductor sources of quantum light for optical quantum computing– Quantum Interference with photon-number superpositions– Administering an antidote to Schrödinger’s cat
Mutually entangled multi-photon states are at the heart of all-optical quantum technologies. While impressive progress has 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
Quantum Lab is pleased to announce the 2024 edition of the Italian Quantum Weeks (https://quantumweeks.it) exhibition “Speak the Unspeakable: A Journey into Quantum Mechanics” to be held at the Botanical Garden of Rome from 13 to 19 April. The event is organized in collaboration with the Department of Physics, the Museum of Physics and the … Leggi tutto
In 20th-22th March 2024, Sapienza University has organized the traditional annual event Porte Aperte alla Sapienza, which is intended for high school students as a orientation event to choose consciously to which University course they want to enroll. This event is organized on an annual basis and has typically a very large audience, covering all … Leggi tutto
The geometrical arrangement of a set of quantum states can be completely characterized using relational information only. This information is encoded in the pairwise state overlaps, as well as in Bargmann invariants of higher degree written as traces of products of density matrices. We describe how to measure Bargmann invariants using suitable generalizations of the … Leggi tutto
Universal photonic processors (UPPs) are fully programmable photonic integrated circuits that are key components in quantum photonics. With this work, we present a novel platform for the realization of low-loss, low-power, and high-fidelity UPPs based on femtosecond laser writing (FLW) and compatible with a large wavelength spectrum. In fact, we demonstrate different UPPs, tailored for … Leggi tutto
Un gruppo di ricerca internazionale ha ideato e dimostrato che è possibile effettuare calcoli da remoto su processori quantistici mantenendo intatta la privacy di tutti gli utenti coinvolti. I risultati dell’esperimento, condotto presso il Quantum Lab dell’Università Sapienza di Roma, sono stati pubblicati sulla rivista Nature Communications e costituiscono un passo in avanti fondamentale verso … Leggi tutto
The PHOQUSING workshop, held at Sorbonne Université, just ended. Approx 30 participants had been involved in fruitful discussions and new plans. List of speakers: Gonzalo Carvacho Giovanni Corrielli Beatrice Polacchi Dominik Leichtle Chin-Te Liao Léo Monbroussou Ernesto Galvão Bo Yang Mina Doosti Programme:
Universal blind quantum computing allows users with minimal quantum resources to delegate a quantum computation to a remote quantum server, while keeping intrinsically hidden input, algorithm, and outcome. State-of-art experimental demonstrations of such a protocol have only involved one client. However, an increasing number of multi-party algorithms, e.g. federated machine learning, require the collaboration of … Leggi tutto
In a recently published piece of work funded by PHOQUSING, PhD student Filipa Peres and PHOQUSING PI Ernesto Galvão, both from INL, explore a universal model of quantum computation known as Pauli-based computation. They show that this model can be used to compile quantum circuits dominated by Clifford gates, demonstrating helpful quantum resource savings in … Leggi tutto