Related papers: Variations on Quantum Oblivious Transfer
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This paper has been withdrawn by the author, due to errors in the figures.
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This paper has been withdrawn by the authors, due a oversimplified decoherence model. It will be substituted by a new work.
This paper has been withdrawn by the first author due to disagreement with experiments.
This paper has been withdrawn by the author, because a better treatment is given in the author's Phd. thesis (Sections 3.4.6 and 4.4), now available on the arxiv.
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This paper has been withdrawn by the author because overcame by arXiv:0910.4694
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This paper has been withdrawn by the authors; replaced by arXiv:0705.2531v2 [quant-ph].
This paper has been withdrawn by the authors due to a crucial error.
This paper has been withdrawn. The main technical result will reappear in the new version of quant-ph/0501003.
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