Abstract: In recent years, the physical realization technology of quantum computing has made rapid progress, and the construction of quantum computing devices for practical use has become the development focus. Compared with classical simulation, it is more efficient for quantum simulation to study the evolution behavior of quantum spin system. The perfect state transfer in a one-dimensional quantum spin chain has important re-search value in the field of quantum communication and quantum computation. This paper proposes a pro-grammable quantum simulation method of perfect state transfer based on continuous-time quantum walks of two photons, and experimentally demonstrates “periodic and mirror-symmetric” perfect state transfer of two excitations in XY-type quantum spin chain under two special Hamiltonians with a quantum photonic chip. The results provide a practical and scalable scheme for simulating the dynamics of quantum spin systems.

Key words: quantum computing, quantum simulation, quantum spin system, perfect state transfer, quantum photonic chip