Cross talk compensation in multimode continuous-variable entanglement distribution

Two-mode squeezed states are scalable and robust entanglement resources for continuous-variable hybrid quantum information protocols at a distance. We consider the effect of linear cross talk in multimode distribution two-mode propagating through parallel similar channels. First, to reduce degradation distributed Gaussian entanglement, we show that initial squeezing entering channel should be optimized already presence small talk. Second, suggest simultaneous optimization relative phase between modes their coupling on receiver side prior use which can fully compensate once transmittance is same all modes. For realistic channels with values either modes, still largely compensated. This method relying mode interference overcomes an alternative localization one pair using measurement another feed-forward control. Our theoretical results pave way more efficient photonic networks