Quantum Optics 2
– High-dimensional quantum information
Generation, manipulation and measurement of high-dimensional photonic states allow one to go beyond the binary encoding of qubits. This, in turns, unlocks novel quantum information protocols as well as a practical tools for experimental foundational tests of quantum mechanics.
References:
Graffitti F. et al. Hyperentanglement in structured quantum light. Physical Review Research 2 (4), 043350 (2020).
D’Ambrosio, V. et al. Tunable two-photon quantum interference of structured light Phisical Review Letters 122, 013601 (2019).
– Quantum Inspired Sensing
Light is an invaluable tool for fast, non-invasive and accurate measurement of physical quantities. By exploiting NOON-like photonic states based on structured light we develop optical transducers of angular or mechanical displacements with enhanced sensing performances.
References:
Barboza R. et al Ultra-sensitive measurement of transverse displacement with linear photonic gears. Nature Communications 13, 1080 (2022).
– Quantum correlations engineering
Controlling and exploiting quantum correlations is a critical task in quantum technologies. We tailor photonic correlations in optical modes by leveraging on the concept of structured light and quantum interference.
References:
Schiano C. et al Engineering quantum states from a spatially structured quantum eraser. Science Advances 10, eadm9278 (2024).