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Integrated quantum photonics provides a scalable platform for the generation,manipulation, and detection of optical quantum states by confining light insideminiaturized waveguide circuits. Here we show the generation, manipulation, andinterferometric stage of homodyne detection of non-classical light on a singledevice, a key step towards a fully integrated approach to quantum informationwith continuous variables. We use a dynamically reconfigurable lithium niobatewaveguide network to generate and characterize squeezed vacuum and two-modeentangled states, key resources for several quantum communication and computingprotocols. We measure a squeezing level of -1.38+-0.04 dB and demonstrateentanglement by verifying an inseparability criterion I=0.77+-0.02<1. Ourplatform can implement all the processes required for optical quantumtechnology and its high nonlinearity and fast reconfigurability makes it idealfor the realization of quantum computation with time encoded continuousvariable cluster states.

Integrated photonic platform for quantum information with continuous variables