New principle sets maximum limit on quantum information communication

Tuesday, June 4, 2013 - 12:01 in Physics & Chemistry

(Phys.org) —When two parties use a quantum system to share information, the amount of quantum information that can be communicated is fundamentally limited by quantum properties. Now in a new paper, Damián Pitalúa-García, a scientist in the University of Cambridge's Centre for Quantum Information and Foundations in the Department of Applied Mathematics and Theoretical Physics, has proposed a principle that can determine the maximum amount of quantum information that a quantum system can communicate. According to this principle, the maximum amount of information is limited only by the quantum system's dimension, and does not depend on any physical resources previously shared by the communicating parties.

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