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Author

Teng Zhao

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Preprint Aug 2026

Heralded Non-Gaussian Squeezed-State Inputs for Parity-Detection SU(1,1) Interferometry

Non-Gaussian operations can reshape the photon statistics of continuous-variable probes, but their metrological advantage is meaningful only when heralding probability and photon-number resources are counted consistently. We compare photon subtraction, photon addition, and photon catalysis as input-side heralding opera...

Lifen Guo, Qingqian Kang, Teng Zhao et al. · 0 citations
Preprint Jul 2026

Fully-connected three-mode squeezed vacuum: Gaussian entanglement, steering, and collective photon subtraction

We investigate a fully-connected three-mode squeezed vacuum (FC-C3MSV) state, where all three modes are pairwise coupled through nonlinear interactions in a triangle ($K_3$) topology. Using the integration-within-ordered-product technique, we derive the normal product form of the squeezing operator and obtain the covar...

Manjia Mai, Ji-feng Sun, Teng Zhao et al. · 0 citations

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