Analytical and experimental study of center-line miscalibrations in Mølmer-Sørensen gates

نویسندگان

چکیده

A major challenge for the realization of useful universal quantum computers is achieving high fidelity two-qubit entangling gate operations. However, calibration errors can affect operations and limit their fidelity. To reduce such it desirable to have an analytical understanding quantitative predictions effects that miscalibrations parameters on performance. In this work, we study a systematic perturbative expansion in miscalibrated M\o{}lmer-S\o{}rensen gate, which widely used trapped-ion processors. Our treatment particularly focuses center-line detuning miscalibrations. Via unitary Magnus expansion, compute evolution operator, allows us obtain relevant key properties as relative phases, electronic populations, state purity fidelities. These quantities, subsequently, are assess performance using entangled states metric. We verify from our model by benchmarking them against measurements processor. The method results presented here help design calibrate high-fidelity large-scale computers.

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ژورنال

عنوان ژورنال: Physical review

سال: 2022

ISSN: ['0556-2813', '1538-4497', '1089-490X']

DOI: https://doi.org/10.1103/physreva.105.032437