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Quantum broadcast communication

Jian Wang·Quan Zhang·Chao-jing Tang
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Abstract

Broadcast encryption allows the sender to securely distribute his/her secret to a dynamically changing group of users over a broadcast channel. In this paper, we just consider a simple broadcast communication task in quantum scenario, which the central party broadcasts his secret to multi-receiver via quantum channel. We present three quantum broadcast communication schemes. The first scheme utilizes entanglement swapping and Greenberger-Horne-Zeilinger state to realize a task that the central party broadcasts his secret to a group of receivers who share a group key with him. In the second scheme, based on dense coding, the central party broadcasts the secret to multi-receiver who share each of their authentication key with him. The third scheme is a quantum broadcast communication scheme with quantum encryption, which the central party can broadcast the secret to any subset of the legal receivers.

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Jian Wang, Quan Zhang, Chao-jing Tang. 2006-04-28. Quantum broadcast communication. https://doi.org/10.1088/1009-1963%2F16%2F7%2F011

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