8 papers
Dissipation-engineered dual-charger quantum batteries
Yi-jia Yang, Yu-qiang Liu, Zheng Liu +3
Suppressing coherent energy backflow while maintaining extractable energy in a stable nonequilibrium state remains a central challenge for quantum energy storage. Here, we introduc…
Dynamical Criticality Behind Energy-Storage Singularities in Quantum Batteries
Zheng Liu, Wen-Hui Nie, Yi-jia Yang +2
Energy-storage singularities in quantum batteries are often associated with equilibrium quantum criticality. Here we show that, in quench-driven many-body batteries, such singulari…
Quantum Magnetometry with Orientation beyond Steady-State Limits in Cavity-Magnon Systems
Zheng Liu, Ding-hui Xu, Yi-jia Yang +1
We present a transient quantum sensing framework for cavity-magnon systems that circumvents the inevitable loss of initial-state quantum properties plaguing conventional steady-sta…
Enhancing optomechanical force sensing utilizing synthetic magnetism
Ding-hui Xu, Zheng Liu, Chang-shui Yu
In precision force sensing of multi-mechanical mode optomechanical systems, coherent interference can decouple certain degenerate vibrational modes from the cavity field, leading t…
Enhanced Sensing by Geometric Tuning of YIG Spheres: Noise Reduction, Signal Amplification and Directional Magnetic Field Detection
Zheng Liu, Ding-hui Xu, Yi-jia Yang +1
Noise suppression and directional signal enhancement are essential challenges in detecting weak magnetic fields in cavity electrodynamics systems. Traditional schemes struggle to r…
Behavior of quantum coherence in the ultrastrong and deep strong coupling regimes of light-matter system
Yu-qiang Liu, Qiulin Long, Yi-jia Yang +12
The ultrastrong and deep strong coupling regimes exhibit a variety of intriguing physical phenomena. In this work, we utilize the Hopfield model of a two-mode bosonic system, with…