We demonstrate the possibility of generating non-Gaussian states of light by exploiting a setup fully based on plug-and-play guided-wave components from classical telecom and non-linear optical technologies. Our scheme relies on heralded single photon subtraction from single mode squeezed states generated in a single-pass configuration in nonlinear optical waveguides and allows generating Schrodinger kitten quantum optical states. We discuss the different parameters affecting the shape of obtained states by comparing the theory and the numerical simulations.
In this work, we study the generation of non-Gaussian quantum states of light using multimode quantum resources. We first propose a theoretical framework to describe photon subtraction operation - a well known non-Gaussian operation - applied to a multimode Gaussian state. We apply this framework to the case of Schrödinger kitten state generation using a multimode squeezed vacuum as input state. We show that a monomode non-Gaussian state with high purity can be generated by a better choice of the different experimental parameters. Then, we propose a new protocol to generate high amplitude non-Gaussian states using spectral multiplexing of input states and Gaussian operations. We show that this protocol can implement the cat breeding operation with less complexity. We show also that this protocol can be used for the generation of approximated GKP state.
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