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

Article

关键词: SINGLE-ELECTRON SPIN;    QUANTUM;    FIDELITY;   

DOI  :  10.1103/PhysRevB.105.085414

来源: SCIE

【 摘 要 】

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 research, crosstalk in spin qubit arrays has been investigated for nondriven 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 analyze the impact of crosstalk drives on qubit operations, such as the CNOT and CPHASE gates. We investigate the case of parallel Y 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.

【 授权许可】

Free