New encoding schemes for quantum authentication
Priscila Garcia-Fernandez, Enrique Fernandez-Martinez, Esther Perez, David J. Santos
Abstract
We study the potential of general quantum operations, Trace-Preserving Completely-Positive Maps (TPCPs), as encoding and decoding mechanisms in quantum authentication protocols. The study shows that these general operations do not offer significant advantage over unitary encodings. We also propose a practical authentication protocol based on the use of two successive unitary encodings.
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