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.
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