TY - JOUR
T1 - Can quantum cryptography imply quantum mechanics? Reply to Smolin
Y1 - 2003
A1 - Hans Halvorson
A1 - Jeffrey Bub
AB - Clifton, Bub, and Halvorson (CBH) have argued that quantum mechanics can be derived from three cryptographic, or broadly information-theoretic, axioms. But Smolin disagrees, and he has given a toy theory that he claims is a counterexample. Here we show that Smolin's toy theory violates an independence condition for spacelike separated systems that was assumed in the CBH argument. We then argue that any acceptable physical theory should satisfy this independence condition.
UR - http://arxiv.org/abs/quant-ph/0311065v1
ER -
TY - JOUR
T1 - Characterizing quantum theory in terms of information-theoretic constraints
JF - Foundations of Physics
Y1 - 2002
A1 - Rob Clifton
A1 - Jeffrey Bub
A1 - Hans Halvorson
AB - 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.
VL - 33
U4 - 1561 - 1591
UR - http://arxiv.org/abs/quant-ph/0211089v2
CP - 11
J1 - Foundations of Physics 33
U5 - 10.1023/A:1026056716397
ER -