Author

Xiao-Fen Huang

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Preprint Sep 2026

Evolution of quantum imaginarity in black hole quantum atmosphere

Quantum imaginarity, as a critical resource metric for quantifying intrinsic nonreal coherence encoded in quantum states, exhibits nontrivial evolutionary behaviors in curved spacetime backgrounds. This work focuses on bipartite Dirac field reduced states in the quantum atmosphere of a static Schwarzschild black hole,...

Ruo-Pu Sun, Xiao-Fen Huang · 0 citations

Preprint Aug 2026

Dynamical evolution of quantum mutual information in Schwarzschild spacetime

Quantum mutual information is a fundamental quantity for characterizing correlations among quantum systems. In this work, we investigate the dynamic evolution of the quantum mutual information based on R\'enyi-2 entropy for three-mode Gaussian states in the background of a Schwarzschild black hole. We find that the phy...

Guo-Sen Ma, Fang Rao, Jing-Jing Hua et al. · 0 citations

Open access Aug 2026

Pixel shift-based reversible steganography for privacy-preserving medical images

Experimental results demonstrate the algorithm’s effectiveness in preserving privacy while enabling perfect image recovery: the container images achieve an average PSNR of 40.08 dB and MSSIM of 0.988 relative to the carriers, confirming near-perceptual-indistinguishability; the reconstructed secret images are recovered...

Xiao-Fen Huang, Bing Zhang, Xishun Zhu · Frontiers in Medicine · 0 citations