Mitigating measurement crosstalk via pulse shaping
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 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.
Authors
- Jiayu Ding (ORCID: https://orcid.org/0009-0002-0276-7582)
- Ruixia Wang (ORCID: https://orcid.org/0009-0007-1504-921X)
- Zhen Yang (ORCID: https://orcid.org/0000-0002-4400-3823)
- Fei Yan (ORCID: https://orcid.org/0000-0002-4674-2806)
- Haifeng Yu (ORCID: https://orcid.org/0000-0002-0164-302X)
- Wuerkaixi Nuerbolati
- He Wang (ORCID: https://orcid.org/0000-0002-7821-0767)
- Yang Gao (ORCID: https://orcid.org/0000-0003-1052-4759)
- Feiyu Li (ORCID: https://orcid.org/0000-0001-9949-0908)
- Yanjun Ma
- Yirong Jin
- Liu Yang (ORCID: https://orcid.org/0000-0001-8656-1148)
- Tang Su
Institutions
- Hefei University (CN)
- FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic (CZ)
- Beijing Academy of Quantum Information Sciences (CN)
- National Laboratory for Superconductivity (CN)
- University of Chinese Academy of Sciences (CN)
Publication Details
- Journal
- Applied Physics Letters
- Published
- 2026-01-05
- DOI
- https://doi.org/10.1063/5.0301068
- Primary Topic
- Engineering and Test Systems
- Type
- article
- Field-Weighted Citation Impact
- 0.00