Quantum gate converts computational errors into detectable photon loss, for erasure conversion in efficient quantum error correction

https://phys.org/news/2026-08-qubit-entangling-gate-flags-errors.html

"2-qubit, flags when/ where photon in operation lost, signals error without destroying underlying stored quantum information... converting ambiguous bit-flip or phase-flip errors into known, physical losses significantly raises the fault-tolerance threshold for quantum error correction codes... self-monitoring capability drastically reduces the physical qubit overhead required for fault tolerance, offering efficient path toward scalable, fault-tolerant quantum computers"