Abstract
An experimental feasible scheme of multiparty secret sharing ofclassical messages is proposed, based on a cavity quantum electrodynamicsystem. The secret messages are imposed on atomic Bell states initiallyin the sender's possession by local unitary operations. By swappingquantum entanglement of atomic Bell states, the secret messages aresplit into several parts and each part is distributed to a separateparty. In this case, any subset of the entire party group can not readout the secret message but the entirety via mutual cooperations. In thisscheme, to discriminate atomic Bell states, additional classical fieldsare employed besides the same highly-detuned single-mode cavities usedto prepare atomic Bell states. This scheme is insensitive to the cavitydecay and the thermal field, and usual joint Bell-state measurements areunnecessary.
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