Driven non-local quantum gates in spin-based double-quantum-dot qubits

Stephen McMillan; Guido Burkard

doi:10.1117/12.2678301

6 October 2023 Driven non-local quantum gates in spin-based double-quantum-dot qubits

Stephen McMillan, Guido Burkard

Proceedings Volume PC12656, Spintronics XVI; PC126560B (2023) https://doi.org/10.1117/12.2678301
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States

Abstract

Here we explore the potential for driving entanglement between spatially-separated flopping-mode spin qubits dispersively coupled to a common photonic mode of a superconducting resonator. We propose a scheme for synchronizing single-qubit rotations with a cross-resonance drive to realize a spin-based direct-CNOT[1]. This simultaneous evolution yields gate-times within the entanglement time of the cross-resonance gate. The average gate fidelity (>90%) is calculated in the presence of cavity loss, electron-phonon interaction, and general spin-dephasing. We then extend our analysis of the direct-CNOT to discuss opportunities for driving three-qubit entanglement in spin-based platforms. [1] S. R. McMillan et al., arXiv:2207.13588 (2022)

Conference Presentation

Citation Download Citation

Stephen McMillan and Guido Burkard "Driven non-local quantum gates in spin-based double-quantum-dot qubits", Proc. SPIE PC12656, Spintronics XVI, PC126560B (6 October 2023); https://doi.org/10.1117/12.2678301

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