The quantum bit commitment theorem
arXiv:quant-ph/0007090 · doi:10.1023/A:1017597528026
Abstract
Unconditionally secure two-party bit commitment based solely on the principles of quantum mechanics (without exploiting special relativistic signalling constraints, or principles of general relativity or thermodynamics) has been shown to be impossible, but the claim is repeatedly challenged. The quantum bit commitment theorem is reviewed here and the central conceptual point, that an `Einstein-Podolsky-Rosen' attack or cheating strategy can always be applied, is clarified. The question of whether following such a cheating strategy can ever be disadvantageous to the cheater is considered and answered in the negative. There is, indeed, no loophole in the theorem.
LaTeX, 25 pages. Forthcoming in Foundations of Physics, May 2001
References in corpus (8)
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Cited by in corpus (13)
- In defense of the epistemic view of quantum states: a toy theory
- Degrees of concealment and bindingness in quantum bit commitment protocols
- Experimental Quantum Coin Tossing
- Quantum mechanics is about quantum information
- Quantum key distribution based on orthogonal states allows secure quantum bit commitment
- Secure key distribution via pre- and post-selected quantum states
- Simplified quantum bit commitment using single photon nonlocality
- Can relativistic bit commitment lead to secure quantum oblivious transfer?
- Unconditionally secure quantum bit commitment based on the uncertainty principle
- No-masking theorem for observables
- An optical implementation of quantum bit commitment using infinite-dimensional systems
- Cryptanalysis and improvement of Wu-Cai-Wu-Zhang's quantum private comparison protocol
- Quantum oblivious transfer: a short review