A family of positive semidefinite operators is introduced that witnesses arbitrary logical GKP qubit states and enables their efficient characterization via three quadrature measurements.
Generation of quantum states with nonlinear squeezing by kerr nonlinearity.Opt
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Introduces catability metric rooted in nonlinear squeezing for detecting cat-like features in quantum superpositions, shown numerically robust to loss.
Nonlinear feedforward in deterministic and probabilistic teleportation reduces noise and improves nonlinear squeezing transfer for non-Gaussian states in small CV cluster states.
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Non-Gaussian state teleportation with a nonlinear feedforward
Nonlinear feedforward in deterministic and probabilistic teleportation reduces noise and improves nonlinear squeezing transfer for non-Gaussian states in small CV cluster states.