First-principle crosstalk dynamics and Hamiltonian learning via Rabi experiments

• URL: http://arxiv.org/abs/2502.05362v1
• Date: Fri, 07 Feb 2025 22:27:41 GMT
• Title: First-principle crosstalk dynamics and Hamiltonian learning via Rabi experiments
• Authors: Jan Balewski, Adam Winick, Yilun Xu, Neel Vora, Gang Huang, David Santiago, Joseph Emerson, Irfan Siddiqi,
• Abstract summary: We present a description of crosstalk and learn the underlying parameters by executing novel simultaneous Rabi experiments.<n>We observe excellent agreement between our theoretical predictions and experimental results.<n>This method provides whole-chip crosstalk characterization, a useful tool for guiding quantum processor design.
• Score: 8.258634148681306
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Coherent errors constitute a significant barrier to successful large-scale quantum computation. One such error mechanism is crosstalk, which violates spatial locality or the independence of operations. We present a description of crosstalk and learn the underlying parameters by executing novel simultaneous Rabi experiments and fitting the Hamiltonian to the observed data. We use this model to predict three- and four-qubit experiments and observe excellent agreement between our theoretical predictions and experimental results. Our technique enables researchers to study the dynamics of multi-qubit circuits without performing experiments, potentially facilitating the minimization of coherent gate errors via digital pulse precompilation. Additionally, this method provides whole-chip crosstalk characterization, a useful tool for guiding quantum processor design.

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