相关论文: The existance of unconditionally secure quantum bi…

This paper has been withdrawn by the author; see the much expanded, improved, and generalized version at arXiv:0811.2080.

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This paper has been withdrawn by the author.

This paper has been withdrawn by the author.

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This paper has been withdrawn by the author due to a error in attachment of source file.

Due to the commonly known impossibility results, unconditional security for oblivious transfer is seen as impossible even in the quantum world. In this paper, we try to overcome these impossibility results by proposing a protocol which is…

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This paper has been withdrawn.

The paper has been withdrawn by the author, due to a critical error stemming from the defined template.

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This paper has been withdrawn.

This paper has been withdrawn since it was an inadvertant double submission. An updated version of the original submission can be found at quant-ph/0505131

This paper has been withdrawn by the author, due to an error in relation (11).

We show that a secure quantum protocol for coin tossing exist. The existence of quantum coin tossing support the conjecture of D.Mayers [Phys.Rev.Lett. 78, 3414(1997)] that only asymmetrical tasks as quantum bit commitment are impossible.

This paper has been withdrawn by the authors due to a likely hole in the proof.

We describe new unconditionally secure bit commitment schemes whose security is based on Minkowski causality and the monogamy of quantum entanglement. We first describe an ideal scheme that is purely deterministic, in the sense that neither…

This paper has been withdrawn due to non-clearness of some technical points, as well as lack of a reasonable statement of quantization conjecture.

This paper was withdrawn by the authors.

The paper has been withdrawn by authors.