  Unconditionally secure quantum bit commitment (QBC) was considered
impossible. But the no-go proofs are based on the Hughston-Jozsa-Wootters (HJW)
theorem (a.k.a. the Uhlmann theorem). Recently it was found that in
high-dimensional systems, there exist some states which can display a chaos
effect in quantum steering, so that the attack strategy based on the HJW
theorem has to require the capability of discriminating quantum states with
very subtle difference, to the extent that is not allowed by the uncertainty
principle. With the help of this finding, here we propose a simple QBC protocol
which manages to evade the no-go proofs.

Quantum Physics