Solid-state system swaps quantum states between electron/ nuclear spins, extending room-temperature coherence times up to 240-fold

https://phys.org/news/2026-09-nuclear-swap-room-temperature-entanglement.html

"environmental noise degrades quantum information in shallow solid-state defect qubits... overcome using optical/ microwave control pulse sequence SWAP-gate protocol transferring entangled states from noise-sensitive electron spins in silicon carbide color centers into neighboring silicon-29 nuclear spins serving as long-lived quantum memory/ couple far less strongly to surface fluctuations so protected from decoherence for significantly longer durations before being mapped back to electron for optical readout"