From photons to superconducting circuits, bosons are key building blocks for quantum technologies. Their complete mathematical description involves an infinite number of states, forcing scientists to rely on simplified models. But are these essential shortcuts reliable, or is crucial information being lost?
In a new study published in Nature Communications, researchers at Inria – as part of the VeriQuB project – have rigorously proven that these common simplifications are fundamentally sound. Over six years, Francesco Arzani, Ulysse Chabaud and Robert I. Booth worked together to demonstrate that simplified models still capture the essential physics of bosonic systems.
This foundational work resolves long-standing questions in quantum computing and helps pave the way for designing “universal bosonic simulators” – powerful quantum machines capable of emulating any other physical system.
Why it matters:
✔️ Validates modeling in quantum optics & computing
✔️ Enables engineering of bosonic quantum states & gates
✔️ Leads to an infinite-dimensional Solovay–Kitaev theorem