15 papers
Preserving Heisenberg-Limited Metrological Information during Storage via Correlated-Noise Correction
Hang Xu, Xue-Ke Song, Jingzheng Huang +2
Quantum error correction has become an indispensable tool for restoring Heisenberg-limited precision in noisy quantum metrology. Existing protocols, however, almost exclusively foc…
Reinforcement-Learned Electric-Field Sensing with Asymmetrically Blockaded Rydberg Arrays
Shi-Qiang Qiao, Xue-Ke Song, Shi-Lei Su +2
We present a reinforcement learning-optimized Rydberg electrometer based on the asymmetric blockade effect and achieve high-sensitivity electric field sensing in Rydberg arrays. Mi…
Dynamical redistribution of quantum resources in tree-level Bhabha scattering
Zan Cao, Meng-Long Song, Xue-Ke Song +2
The fundamental interactions governed by quantum electrodynamics (QED) are intrinsically rich in quantum resources, yet how these resources dynamically redistribute during relativi…
Transducer leakage error suppression using invariant-based shortcut
Shi-Qiang Qiao, Zheng Shan, Xue-Ke Song +3
The paper proposes an invariant‑based shortcut control method to suppress transducer leakage errors in spin‑superconducting hybrid quantum systems, achieving over 99% fidelity for…
Quantifying and Probing Multipartite Entanglement via Minimum Entanglement Drop
Dong-Dong Dong, Xue-Ke Song, Liu Ye +1
Quantifying genuine multipartite entanglement remains a significant challenge. We propose a multipartite entanglement monotone defined by the minimum entanglement drop -- the reduc…
Universal photon blockade via two-photon light-matter interaction at chiral exceptional points
Hai-Tao Dong, Meng-Long Song, Si-Yu Zhang +3
The photon blockade (PB) effect is a hallmark non-classical phenomenon in quantum optics and finds important applications for building quantum sources, while the control of PB by t…