Wave-Particle duality: Quantum cryptography: Security criteria reexamined

Dagomir Kaszlikowski, Ajay Gopinathan, Yeong Cherng Liang, L. C. Kwek, Berthold Georg Englert

Research output: Chapter in Book/Report/Conference proceedingChapter


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.

Original languageEnglish
Title of host publicationQuantum Paths
Subtitle of host publicationFestschrift in Honor of Berge Englert on his 60th Birthday
PublisherWorld Scientific Publishing Co.
Number of pages5
ISBN (Electronic)9789814651844
ISBN (Print)9789814651837
Publication statusPublished - 2015 Jan 1

All Science Journal Classification (ASJC) codes

  • General Arts and Humanities
  • General Physics and Astronomy


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