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quant-ph2026
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…
quant-ph2026
Extensible universal photonic quantum computing with nonlinearity
Shang Yu, Jinzhao Sun, Kuan-Cheng Chen +17
Universal quantum computing requires an architecture that supports both linear circuits and, crucially, strong nonlinear resources. For quantum photonic systems, integrating such n…
quant-ph2024
Resource-efficient Direct Characterization of General Density Matrix
Liang Xu, Mingti Zhou, Runxia Tao +12
Sequential weak measurements allow the direct extraction of individual density-matrix elements instead of globally reconstructing the whole density matrix, opening a new avenue for…