Hearing The Quantum

Vlad Negnevitsky is working towards serious quantum error correction. He prepares a Bell state of two Beryllium ions, and measures its parity with an ancilla Calcium ion. He then uses this result to correct for any errors in real time. V. Negnevitsky et al, Repeated multi-qubit readout and feedback with a mixed-species trapped-ion register, Nature volume 563, pages 527–531 (2018) (paper, preprint)