▎ 摘　　要

The pseudospin interaction between graphene sheets inserted into a microwave cavity is studied, and a pseudospin radiation driven by the pseudospin interaction is presented. It is found that a circularly polarized photon can induce a distant pseudospin interaction and a pseudospin radiation. An interference effect of pseudospins from two graphene sheets results in an oscillation distribution of this interaction with the distance between two graphene sheets. Both the pseudospin interaction and pseudospin radiation can be enhanced by increasing microwave intensity and decreasing the microwave frequency. The acting range of this pseudospin interaction may reach the order of magnitude of the cavity length. This makes the distant interaction of pseudospins in two graphene sheets become possible if the distance between the two reflectors in the cavity is far enough. The graphene vibration around the positions of some antinodes of standing microwaves in the cavity driven by pseudospin interaction can emit an electromagnetic wave. By measuring the frequency of this radiation field, the pseudospin interaction between two graphene sheets can be determined quantitatively.