6 papers
Weak Fragmentation and Thermalization in a Dipole-Conserving Bose-Hubbard Chain
Chenrong Liu
We study Hilbert-space fragmentation and thermalization in a one-dimensional dipole-conserving Bose-Hubbard chain. By analyzing the structure of the Hamiltonian matrix in the Fock…
Photon-Atom Granularity Noise Thermometry
Chen-Rong Liu, Yixuan Wang, Xiaowei Wang +5
We propose granularity noise thermometry (GNT), a fluctuation-based optical thermometry scheme that exploits the intrinsic fluctuations of susceptibility arising from atomic discre…
Granularity Noise Limit in Atomic-Ensemble-Based Metrology
Chen-Rong Liu, Chuang Li, Runxia Tao +4
Conventional noise analysis in atomic-ensemble sensing assumes a continuous-medium approximation, thereby treating the atomic system as a deterministic dielectric. Here, we demonst…
Fisher-Based Sensitivity Framework for Rydberg Atom Microwave Electrometry
Chen-Rong Liu, Runxia Tao, Xiang Lv +4
Fisher information provides a rigorous theoretical benchmark for evaluating quantum sensor sensitivity; however, a comprehensive framework for quantifying the fundamental limits of…
Noise-Resilient Quantum Metrology with Quantum Computing
Xiangyu Wang, Chenrong Liu, Xue Lin +8
Quantum computing has made remarkable strides in recent years, as demonstrated by quantum supremacy experiments and the realization of high-fidelity, fault-tolerant gates. However,…
Beyond Conventional Pairing: Bosonic Quartic Superfluidity, Exotic XY Magnetism, and Phase Criticality
Chenrong Liu, Zhi Lin
We report two unprecedented bosonic quartic superfluid (BQSF) phases in binary boson mixtures with synthetic pair-hopping (SPH) interaction realizable through Floquet engineering,…