Quantum

High-Fidelity Inter-Species Rydberg Gates with Two-Photon Driving

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Briefings

A new model describes suppressing laser crosstalk in inter-species Rydberg gates using two-photon driving, enabling gate fidelities above 99.8% in the near-detuned case of an 85Rb/87Rb system. The study highlights that crosstalk influence can be minimized via gate design and further improved by enhancing Rydberg excitation. This work addresses a previously unexplored issue in dual-species neutral atom systems for quantum information processing.

Key points

• The study introduces a model incorporating laser crosstalk influence in inter-species Rydberg gates driven by two-photon processes.
• Gate fidelities exceeding 99.8% were demonstrated using conservative experimental parameters in the near-detuned case of an 85Rb/87Rb system.

Context and limitations

The research focuses on the near-detuned case of an 85Rb/87Rb system and outlines future enhancements through Rydberg excitation improvements; specific experimental conditions beyond the near-detuned regime are not detailed.

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