▎ 摘　　要

We investigate the neutron polarization induced by interfering pseudospins between two graphene sheets inserted into a cavity with a circularly polarized photon field. We find that only when two graphene sheets are located at the coordinate positions of some antinodes of standing photon field, the neutron polarization is most remarkable. This is caused by an interference effect of pseudospins between two graphene sheets induced by photons and neutron. This neutron polarization mechanism has potential application on neutron polarization device.