SEMIQUANTUM SECRET SHARING USING TWO-PARTICLE ENTANGLED STATE
Jian Wang, Sheng Zhang, Quan Zhang, Chaojing Tang · International Journal of Quantum Information · 2012
We present a semiquantum secret sharing protocol by using two-particle entangled states in which quantum Alice shares a secret key with two classical parties, Bob and Charlie. Classical Bob and Charlie are restricted to measuring, preparing a particle in the computational basis, or reflecting the particles. None of them can acquire the secret unless they collaborate. We also show the protocol is secure against eavesdropping.