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arXiv · 2006.12801

High-Fidelity Simultaneous Detection of Trapped Ion Qubit Register

Liudmila A. Zhukas·Peter Svihra·Andrei Nomerotski·Boris B. Blinov
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Abstract

Qubit state detection is an important part of a quantum computation. As number of qubits in a quantum register increases, it is necessary to maintain high fidelity detection to accurately measure the multi-qubit state. Here we present experimental demonstration of high-fidelity detection of a multi-qubit trapped ion register with average single qubit detection error of 4.2(1.5) ppm and a 4-qubit state detection error of 17(2) ppm, limited by the decay lifetime of the qubit, using a novel single-photon-sensitive camera with fast data collection, excellent temporal and spatial resolution, and low instrumental crosstalk.

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Liudmila A. Zhukas, Peter Svihra, Andrei Nomerotski, Boris B. Blinov. 2020-06-23. High-Fidelity Simultaneous Detection of Trapped Ion Qubit Register. https://doi.org/10.1103/physreva.103.062614

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