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Title: Quantum cryptography: Security criteria reexamined
Authors: Kaszlikowski, Dagomir
Gopinathan, Ajay
Liang, Yeong Cherng
Kwek, Leong Chuan
Englert, Berthold-Georg
Issue Date: 2004
Citation: Kaszlikowski, D., Gopinathan, A., Liang, Y. C., Kwek, L. C., & Englert, B. G. (2004). Quantum cryptography: Security criteria reexamined. Physical Review A, 70(3), 032306.
Abstract: We find that the generally accepted security criteria are flawed for a whole class of protocols for quantum cryptography. This is so because a standard assumption of the security analysis, namely that the so-called square-root measurement is optimal for eavesdropping purposes, is not true in general. There are rather large parameter regimes in which the optimal measurement extracts substantially more information than the squareroot measurement.
ISSN: 1050-2947
Other Identifiers: 10.1103/PhysRevA.70.032306
Appears in Collections:Journal Articles

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