Randomness certification is a foundational and practical aspect of quantum information science, essential for se-curing quantum communication protocols. Traditionally, these protocols have been implemented and validatedwith a single entanglement source, as in the paradigmatic Bell scenario. However, advancing these protocols tosupport more complex configurations involving multiple entanglement sources is key to building robust architec-tures and … Continua a leggere

“Over the past few years, various methods have been developed to engineer and to exploit the dynamics of photonic quantum states as they evolve through linear optical networks.Recent theoretical works have shown that the underlying Lie algebraic structure plays a crucial role in the description of linear optical Hamiltonians, as such formalism identifies intrinsic symmetries … Continua a leggere

Accurately estimating properties of quantum states, such as entanglement, while essential for the development of quantum technologies, remains a challenging task. Standard approaches to property estimation rely on detailed modeling of the measurement apparatus and a priori assumptions on their working principles. Even small deviations can greatly affect reconstruction accuracy and prediction reliability. Here, we … Continua a leggere

Photonic quantum information processing in metropolitan networks lays the foundation for a global quantum internet, yet typically requires identical emitters to ensure performance. The Nanophotonics and Quantum Lab groups at Sapienza managed to overcome this challenge by experimentally implementing quantum teleportation using originally dissimilar semiconductor quantum dots, engineering their electronic and optical properties via strain … Continua a leggere

Researchers from LIP6–Sorbonne Université, Quantum Lab–Sapienza University of Rome, Politecnico di Milano, and the Istituto di Fotonica e Nanotecnologie–Consiglio Nazionale delle Ricerche (IFN-CNR) have enabled the first demonstration of a photonic quantum convolutional neural network. Their study integrates an efficient photon-based neural network design with advanced hybrid photonic technologies. The work “Photonic quantum convolutional neural networks with … Continua a leggere