相关论文: Quantum Computation Relative to Oracles

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Paper withdrawn due to errors. Revised version may or may not appear in the future.

In a series of recent papers, Hirota and Yuen claim to have identified a fundamental flaw in the theory underlying quantum cryptography, which would invalidate existing security proofs. In this short note, we sketch their argument and show…

This paper has been withdrawn by the author due to an erro thereon line -2 of page 4.

Withdrawn by arXiv administration because authors have forged affiliations and acknowledgements, and have not adequately responded to charges [hep-th/9912039] of unattributed use of verbatim material.

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This paper has been withdrawn by the author, due a crucial error in Eq. 6.

In the last few years, theoretical study of quantum systems serving as computational devices has achieved tremendous progress. We now have strong theoretical evidence that quantum computers, if built, might be used as a dramatically…

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By popular request we post these old (from 2001) lecture notes of the Varenna Summer School Proceedings. The original was published as J. I. Cirac, L. M. Duan, and P. Zoller, in "Experimental Quantum Computation and Information" Proceedings…

This paper has been withdrawn due to crucial erros in equations (24)--(31).

A Comment on the paper "Conservative Quantum Computing" by M. Ozawa, Phys. Rev. Lett. 89, 057902 (2002). The author replies in Phys. Rev. Lett. 91, 089802 (2003).

This paper has been withdrawn by the authors due to a crucial error in calculation.

This paper has been withdrawn by the author, due to a crucial error in the proof of Lemma 3.1.

This is an introductory review on the basic principles of quantum computation. Various important quantum logic gates and algorithms based on them are introduced. Quantum teleportation and decoherence are discussed briefly. Some problems,…

Quantum computation is a subject of much theoretical promise, but has not been realized in large scale, despite the discovery of fault-tolerant procedures to overcome decoherence. Part of the reason is that the theoretically modest…

This paper has been withdrawn by the authors due to an error.

This paper has been withdrawn by the author. The central result is now included in quant-ph/0309056 (as in the journal publication!). An erratum on the Heisenberg perturbation series estimate is also included therein.

This paper has been withdrawn by the first author due to disagreement with experiments.

This paper is being withdrawn by the authors in order to correct some errors and also to introduce improved theoretical techniques.