6 papers
Optimizing LOCC Protocols on Product Stiefel Manifold
Ze-Tong Li, Cheng-Kai Zhu, Xin Wang
Characterizing the operational limits of Local Operations and Classical Communication (LOCC) is a central problem in distributed quantum information, yet remains computationally in…
Sensing of Low-Frequency Electric Fields Using Rydberg EIT within the Fisher Information Framework
Tianyu Zhou, Haipeng Xie, Xin Wang
Rydberg atoms, which possess exceptionally large electric dipole moments, offer a promising route for electric field sensing as well as metrology traceable to the International Sys…
Universal quantum state purification under energy-preserving constraints
Xing-Chen Guo, Benchi Zhao, Xin Wang
Pure quantum states are a fundamental resource for quantum information processing, but unavoidable noise degrades their purity and limits the performance of quantum tasks. Quantum…
Amplifying Decoherence-Free Many-Body Interactions with Giant Atoms Coupled to Parametric Waveguide
Xin Wang, Zhao-Min Gao
Parametric amplification offers a powerful means to enhance quantum interactions through field squeezing, yet it typically introduces additional noise which accelerates quantum dec…
Dressed Interference in Giant Superatoms: Entanglement Generation and Transfer
Lei Du, Xin Wang, Anton Frisk Kockum +1
We introduce the concept of giant superatoms (GSAs), where two or more interacting atoms are nonlocally coupled to a waveguide through one of them, and explore their unconventional…
Generating spatially separated correlated multiphoton states in nonlinear waveguide quantum electrodynamics
Jia-Qi Li, Anton Frisk Kockum, Xin Wang
Strongly correlated multi-photon states are indispensable resources for advanced quantum technologies, yet their deterministic generation remains challenging due to the inherent we…