The ideas here are retold from the historical record, drawn from the sources each event cites. Serge Haroche never posted on Veritula. To report a mistake, email veritula@dennishackethal.com.
Chronicled events
- #5904
Error correction can’t save a quantum computer in practice. It needs many more qubits and steps, each of which errs too, and the large entangled states it relies on are extremely fragile, so it would add errors faster than it removes them.