Light-induced exciton formation in perovskites shows powerful potential for quantum sensing

https://www.anl.gov/article/new-lightinduced-material-shows-powerful-potential-for-quantum-applications

"control atomic spins in spintronics... light detecting spin state in methylammonium lead iodide perovskites... modulating neodymium concentration to that of excitons, neodymium probes for spins in excitons... extend exciton’s lifetime >10X adding neodymium... neodymium a quantum sensor under relatively low magnetic field... adjusting neodymium concentration, can detect excitons' spins, allowing entangling up to 10 electron spins, as qubit material for quantum computing... memory devices, quantum sensors"