Is quantum bit commitment really impossible?

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#1 Fri, 25/01/2008 - 05:31

Is quantum bit commitment really impossible?

Hope anyone who really has the interest (not just taking others' conclusions for granted) on quantum bit commitment (QBC) can share your opinion here.

In fact I proposed a QBC protocol [Phys. Rev. A 74, 022332 (2006).] and though it was not claimed to be unconditionally secure in that paper, if you look into the details you will find that it was already proven secure against the attack proposed in the Mayers-Lo-Chau (MLC) no-go theorem. Actually the protocol appeared previously in quant-ph/0303107, but for plain reasons it cannot get formally published without refraining the claim.

Anyone is welcomed to propose a DETAILED cheating strategy to my protocol here, but please avoid simply asking general questions like "what do you think to be the main point where the MLC theorem goes wrong" without reading my paper in details. Thanks!

And sorry for my English!