Multi-group dynamic quantum secret sharing with single photons

• A multi-group dynamic quantum secret sharing with single photons scheme is proposed.
• Any one of the groups can be chosen to share secret through controlling the polarization of photons.
• Two sets of keys can be shared simultaneously without redistribution.

In this letter, we propose a novel scheme for the realization of single-photon dynamic quantum secret sharing between a boss and three dynamic agent groups. In our system, the boss can not only choose one of these three groups to share the secret with, but also can share two sets of independent keys with two groups without redistribution. Furthermore, the security of communication is enhanced by using a control mode. Compared with previous schemes, our scheme is more flexible and will contribute to a practical application.