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arXiv · 1104.1347

Coherent Error Suppression in Multi-Qubit Entangling Gates

D. Hayes·S. M. Clark·S. Debnath·D. Hucul·I. V. Inlek·K. W. Lee·Q. Quraishi·C. Monroe
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Abstract

We demonstrate a simple pulse shaping technique designed to improve the fidelity of spin-dependent force operations commonly used to implement entangling gates in trapped-ion systems. This extension of the Mølmer-Sørensen gate can theoretically suppress the effects of certain frequency and timing errors to any desired order and is demonstrated through Walsh modulation of a two-qubit entangling gate on trapped atomic ions. The technique is applicable to any system of qubits coupled through collective harmonic oscillator modes.

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D. Hayes, S. M. Clark, S. Debnath, D. Hucul, I. V. Inlek, K. W. Lee, Q. Quraishi, C. Monroe. 2012-04-26. Coherent Error Suppression in Multi-Qubit Entangling Gates. https://doi.org/10.1103/physrevlett.109.020503

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