Mitigating Measurement Crosstalk via Pulse Shaping

• URL: http://arxiv.org/abs/2509.05437v1
• Date: Fri, 05 Sep 2025 18:42:35 GMT
• Title: Mitigating Measurement Crosstalk via Pulse Shaping
• Authors: Yang Gao, Feiyu Li, Yang Liu, Zhen Yang, Jiayu Ding, Wuerkaixi Nuerbolati, Ruixia Wang, Tang Su, Yanjun Ma, Yirong Jin, Haifeng Yu, He Wang, Fei Yan,
• Abstract summary: We introduce a pulse shaping technique inspired by the derivative removal by adiabatic gate (DRAG) protocol to suppress measurement crosstalk during fast readout.<n>By engineering a spectral notch at neighboring resonator frequencies, the method effectively mitigates spurious signal interference.
• Score: 18.932390565177123
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Quantum error correction protocols require rapid and repeated qubit measurements. While multiplexed readout in superconducting quantum systems improves efficiency, fast probe pulses introduce spectral broadening, leading to signal leakage into neighboring readout resonators. This crosstalk results in qubit dephasing and degraded readout fidelity. Here, we introduce a pulse shaping technique inspired by the derivative removal by adiabatic gate (DRAG) protocol to suppress measurement crosstalk during fast readout. By engineering a spectral notch at neighboring resonator frequencies, the method effectively mitigates spurious signal interference. Our approach integrates seamlessly with existing readout architectures, enabling fast, low-crosstalk multiplexed measurements without additional hardware overhead -- a critical advancement for scalable quantum computing.

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