English

Crosstalk analysis for simultaneously driven two-qubit gates in spin qubit arrays

Mesoscale and Nanoscale Physics 2022-03-02 v1 Quantum Physics

Abstract

One of the challenges when scaling up semiconductor-based quantum processors consists in the presence of crosstalk errors caused by control operations on neighboring qubits. In previous work, crosstalk in spin qubit arrays has been investigated for non-driven single qubits near individually driven quantum gates and for two simultaneously driven single-qubit gates. Nevertheless, simultaneous gates are not restricted to single-qubit operations but also include frequently used two-qubit gates such as the CNOT gate. We analyse the impact of crosstalk drives on qubit operations, such as the CNOT and CPHASE gates. We investigate the case of parallel YY and CNOT gates, and we also consider a two-dimensional arrangement of two parallel CNOT gates and find unavoidable crosstalk. To minimize crosstalk errors, we develop appropriate control protocols.

Keywords

Cite

@article{arxiv.2111.10174,
  title  = {Crosstalk analysis for simultaneously driven two-qubit gates in spin qubit arrays},
  author = {Irina Heinz and Guido Burkard},
  journal= {arXiv preprint arXiv:2111.10174},
  year   = {2022}
}

Comments

8 pages, 3 figures

R2 v1 2026-06-24T07:44:46.159Z