Quantum Informational Divergence in Quantum Channel Security Analysis

1 Quantum Informational Divergence in Quantum Channel Security Analysis Laszlo Gyongyosi and Sandor Imre (Corresponding author: L. Gyongyosi) Department of Telecommunications, Budapest University of Technology Magyar tudosok krt. 2., Budapest, H-1117, Hungary (Email: [email protected]) (Received May 20, 2009; revised and accepted Mar. 24, 2010) Abstract Computational Geometry is the art of designing efficient algorithms for answering geometric questions. Computational Geometry involves efficient and elegant solutions for difficult algorithmic problems and plays a central role in many different areas of computer science. Quantum cloning-based attacks have deep relevance to quantum cryptography. In this paper we use the results of classical Computational Geometry to analyze the security of a quantum channel using current classical computer architectures. To analyze a quantum channel for a large number of input quantum states with classical computer architectures, very fast and effective algorithms are required.