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quant-ph2026
Multiscale Schmidt-Spectrum Bounds for High-Dimensional Entanglement: Geometric Measures and Schmidt-Number Witnesses
Liang Xiong, Zhixiang Jin, Yanling Wang +3
High-dimensional bipartite entanglement depends on how probability is distributed across the Schmidt spectrum, whereas a single reference-state fidelity resolves only one spectral…
quant-ph2026
Nonlocal advantage of quantum imaginarity in Schwarzchild spacetime
Bing Yu, Xiao-Yong Yang, Xiaoli Hu +2
Black hole spacetimes provide a natural setting for quantum systems in curved spacetime, where effects such as Hawking radiation arise from event horizons. In this work, we investi…