Abstract:

In this talk, we present Linear-Optical Feynman Paths (LOFP), a C++ package for the strong simulation, that is, the exact calculation of probability amplitudes, of Fock-state boson sampling experiments on planar multimode interferometers. We also explain the LOFP uses a Feynman path sum approach, together with tensor network contraction technique. LOFP also includes routines with implementations of general-purpose permanent calculation algorithms for benchmarking purposes and examples. The LOFP has better performance than general algorithms for permanent calculation in some cases, in particular for constant-depth circuits, and high density of photons per mode.