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Consider a quantum circuit that, when fed a constant input, produces a fixed-length random bit-string in each execution. Executing it many times yields a sample of many bit-strings that contain fresh randomness inherent to the quantum evaluation. When the circuit is freshly selected from a special class, the output distribution of strings cannot be...
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In this paper, we propose a mutual authenticated quantum key agreement scheme based on three-particle entangled states, which can achieve both completely secure and more efficient. In our scheme, the pre-shared keys are classical bit strings between the semi-honest server (SHS) and the client (Alice or Bob), so they are kept and use to authenticate...