First successful demonstration of quantum error correction of qudits for quantum computers

https://phys.org/news/2025-05-successful-quantum-error-qudits.html

"larger Hilbert space crucial role in quantum error correction: qutrit/ ququart (3-, 4-level) using Gottesman–Kitaev–Preskill bosonic code, with help of photons, ultracold atoms,/ molecules, superconducting circuits... optimized using reinforcement learning algorithm finding best way to correct errors/ operate quantum gates... hardware-efficient, although slight increased photon loss/ dephasing rates lowering lifetime... cryptography, materials science, drug discovery, building quantum gates, simulating complex quantum systems"

Related:

World-unique method enables simulation of error-correctable quantum computers
https://www.eurekalert.org/news-releases/1089516

From spin glasses to quantum codes: Researchers develop optimal error correction algorithm
https://phys.org/news/2025-06-glasses-quantum-codes-optimal-error.html