Unconditionally Secure Quantum Coin Tossing via Entanglement Swapping
  An unconditionally secure quantum cion tossing protocol for two remote participants via entangled swapping is presented. The security of this protocol is guaranteed by the nonlocal property of quantum entanglement and the classical complexity. 
Yong-Sheng Zhang, Chuan-Feng Li, and Guang-Can Guo (University of   Science and Technology of China)