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quant-ph2026
Systematic frequency-collision analysis of the cross-resonance gate outside the straddling regime
Shinichi Inoue, Shotaro Shirai, Shuhei Tamate +4
Frequency crowding remains a major obstacle to scaling fixed-frequency transmon processors. Among the widely used all-microwave two-qubit gates, the cross-resonance (CR) gate is pa…
quant-ph2025
High-contrast double Bragg interferometry via detuning control
Rui Li, Víctor José Martínez-Lahuerta, Naceur Gaaloul +1
We propose high-contrast Mach-Zehnder atom interferometers based on double Bragg diffraction (DBD) operating under external acceleration. To mitigate differential Doppler shifts an…
quant-ph2024
Robust double Bragg diffraction via detuning control
Rui Li, V. J. Martínez-Lahuerta, S. Seckmeyer +2
We present a theoretical model and numerical optimization of double Bragg diffraction, a widely used technique in atom interferometry. We derive an effective two-level-system Hamil…