3 papers
quant-ph2026
Experimental High-Accuracy and Broadband Quantum Frequency Sensing via Geodesic Control
Si-Qi Chen, Qi-Tao Duan, Teng Li +1
Accurate frequency estimation of oscillating signals over a broad bandwidth is a central task in quantum sensing, yet it is often compromised by spurious responses to higher-order…
quant-ph2025
Floquet Diamond Sensor with Optimal Precision
Qi-Tao Duan, Teng Li, Si-Qi Chen +2
The diamond sensor has emerged as a promising platform for quantum sensing, enabling the estimation of physical quantities -- such as microwave~(MW) field -- with precision unattai…
quant-ph2025
Multiple-Noise-Resilient Nonadiabatic Geometric Quantum Control of Solid-State Spins in Diamond
Si-Qi Chen, Qi-Tao Duan, Chengxian Zhang +1
Reliable and robust control lies at the core of implementing quantum information processing with diamond nitrogen-vacancy (NV) centers. However, control pulses inevitably introduce…