Atom loss detection in neutral atom systems using simple circuit-based techniques, without disturbing quantum state

https://www.eurekalert.org/news-releases/1068731

"if an atom slips away in the middle of a calculation the result can be completely useless... useful quantum computers will need millions of qubits, and with so many, the odds of losing them mid-program spikes... circuit-based detection method enabling researchers to flag and correct errors achieves 93.4% accuracy... .. second atom, not involved in any calculation, indirectly detects whether an atom of interest is missing"