Another simple unconditionally secure quantum bit commitment protocol -- beating entanglement with entanglement

Horace P. Yuen

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Another simple unconditionally secure quantum bit commitment protocol -- beating entanglement with entanglement

Horace P. Yuen

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Abstract

It is shown how the evidence state space in quantum bit commitment may be made to depend on the bit value 0 or 1 with split entangled pairs. As a consequence, one can obtain a protocol that is perfectly concealing, but is also $ε$-binding because the bit-value dependent evidence space prevents the committing party from cheating by means of a local transformation that is independent of the part of evidence state space that has never been in his possession.

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Horace P. Yuen. 2004-01-14. Another simple unconditionally secure quantum bit commitment protocol -- beating entanglement with entanglement. https://arxiv.org/abs/quant-ph/0305143

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