State Readout of a Trapped Ion Qubit Using a Trap-Integrated Superconducting Photon Detector

S. L. Todaro, V. B. Verma, K. C. McCormick +7

We report high-fidelity state readout of a trapped ion qubit using a trap-integrated photon detector. We determine the hyperfine qubit state of a single ${}^9$Be${}^{+}$ ion held in a su…