Characterizing quantum theory in terms of information-theoretic constraints

Details Characterizing quantum theory in terms of information-theoretic constraints Characterizing quantum theory in terms of information-theoretic constraints

2002-11-15

arxiv.org/abs/quant-ph/0211089v2

Foundations of Physics 33, 1561-1591 (2003)

Physics

Quantum Physics

25 pages, LaTeX

Scientific paper

10.1023/A:1026056716397

We show that three fundamental information-theoretic constraints--the impossibility of superluminal information transfer between two physical systems by performing measurements on one of them, the impossibility of broadcasting the information contained in an unknown physical state, and the impossibility of unconditionally secure bit commitment--suffice to entail that the observables and state space of a physical theory are quantum-mechanical. We demonstrate the converse derivation in part, and consider the implications of alternative answers to a remaining open question about nonlocality and bit commitment.

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