Rotonium srl

Rotonium srl describes itself as a deeptech company founded in 2022. Its stated focus is the development of SWaP-optimized, scalable, room-temperature photonic quantum computers intended for use “everywhere,” including edge, mobile, and cloud settings. The company says its quantum technology is based on the orbital angular momentum properties of photons, and its website also mentions a deterministic 2-qubit gate and manufacturability using standard silicon photonic processes.

The company’s operational headquarters is listed in Padova, Italy, with a registered office in Gemona, Italy. Rotonium presents its work as aimed at quantum communication and computing, and says it is producing QPUs optimized for deployment constraints such as compact size and low power. The team page names Roberto Siagri as CEO and co-founder, Fabrizio Tamburini as CQO and co-founder, Nicolò Leone as Silicon Photonics Design Leader, and Matteo Sanna as Senior Quantum Engineer.