Methods for scalable optical quantum computation

Details Methods for scalable optical quantum computation Methods for scalable optical quantum computation

2006-03-14

arxiv.org/abs/quant-ph/0603118v1

Phys. Rev. Lett. 97, 090501 (2006)

Physics

Quantum Physics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.97.090501

We propose a scalable method for implementing linear optics quantum computation using the ``linked-state'' approach. Our method avoids the two-dimensional spread of errors occurring in the preparation of the linked-state. Consequently, a proof is given for the scalability of this modified linked-state model, and an exact expression for the efficiency of the method is obtained. Moreover, a considerable improvement in the efficiency, relative to the original linked-state method, is achieved. The proposed method is applicable to Nielsen's optical ``cluster-state'' approach as well.

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