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Repeated Multi-Qubit Readout and Feedback in a Mixed-Species Trapped-Ion Register

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Abstract

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.

© 2019 The Author(s)

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