2003/11/10 by Horace P. Yuen, Yuen, Horace P. · 2 citations
Computer Science · Physics and Astronomy · #Chaos-based Image/Signal Encryption #Cryptographic Implementations and Security #FOS: Physical sciences #Quantum Computing Algorithms and Architecture #Quantum Physics (quant-ph) #quant-ph
paper · pdf · doi:10.48550/arxiv.quant-ph/0311061
26 pages, 2 eps figures, revtex4; The present version v.6 is improved over v.4 which is identical to v.5
openalex publication_date 2003/11/10 · arxiv created 2004/07/30 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A new approach to quantum cryptography to be called KCQ, keyed communication in quantum noise, is developed on the basis of quantum detection and communication theory for classical information transmission. By the use of a shared secret key that determines the quantum states generated for different data bit sequences, the users may employ the corresponding optimum quantum measurement to decode the data. This gives them a better error performance than an attacker who does not know the key when she makes her quantum measurement, and an overall generation of a fresh key may be obtained from the resulting advantage. This principle is illustrated in the operation of a concrete qubit system A general information-theoretic description of the overall approach will be presented, and contrasted with the detection/coding description necessary for specific protocols.