Compiling Arbitrary Single-Qubit Gates Via the Phase-Shifts of Microwave Pulses

2021/05/06 by Chen, Jianxin, Ding, Dawei, Huang, Cupjin +1 · 5 citations
#FOS: Physical sciences #Quantum Physics (quant-ph)

paper · doi:10.48550/arxiv.2105.02398

Abstract

We give an arbitrary single-qubit gate compilation scheme on superconducting processors that takes advantage of tuning the phase shift of microwave pulses to obtain a continuous gate set. This scheme is compatible with any two-qubit gate, and we only need to calibrate the X_π and X_π/2 pulses. We implement this on fluxonium and obtain state-of-the-art fidelities. We give two other schemes: the first requires one X_π pulse and one pulse with a variable rotation angle, and the second requires four X_π/2 pulses. We also find that if we can do virtual Z gates, then we can also do virtual gates around any axis. Our results apply to any physical platform that natively supports virtual Z.

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