Repeated Multi-Qubit Readout and Feedback in a Mixed-Species Trapped-Ion Register
Karan K. Mehta, Vlad Negnevitsky, Matteo Marinelli, Hsiang-Yu Lo, Christa Flühmann, Jonathan Home · Conference on Lasers and Electro-Optics · 2019
We measure the parity of two 9Be+ion qubits by mapping the relevant operator onto an ancillary 40Ca+qubit, utilizing multi-species entangling gates. Repeated measurement and feedback cycles allow preparation and stabilization of parity subspaces and Bell states.