Can quantum cryptography imply quantum mechanics? Reply to Smolin

Hans Halvorson, Jeffrey Bub

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)170-175
Number of pages6
JournalQuantum Information and Computation
Issue number2
StatePublished - Mar 2005

All Science Journal Classification (ASJC) codes

  • Theoretical Computer Science
  • Statistical and Nonlinear Physics
  • Nuclear and High Energy Physics
  • Mathematical Physics
  • General Physics and Astronomy
  • Computational Theory and Mathematics


  • Foundations of Quantum Mechanics


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