Title: Proposal for Quantum Simulation via All-Optically Generated Tensor Network States

Speaker: Dr. Ish Dhand, Universitat Ulm, Germany

Abstract: We devise an all-optical scheme for the generation of entangled multimode photonic states encoded in temporal modes of light. The scheme employs a nonlinear down-conversion process in an optical loop to generate one- and higher-dimensional tensor network states of light. We illustrate the principle with the generation of two different classes of entangled tensor network states and report on a variational algorithm to simulate the ground-state physics of many-body systems. We demonstrate that state-of-the-art opticaldevices are capable of determining the ground-state properties of the spin-1/2 Heisenberg model. Finally, implementations of the scheme are demonstrated to be robust against realistic losses and mode mismatch.

Reference: I. Dhand, M. Engelkemeier, L. Sansoni, S. Barkhofen, C. Silberhorn, and M. B. Plenio. Phys. Rev. Lett. 120, 130501 https://doi.org/10.1103/PhysRevLett.120.130501