Document Type

Article

Publication Date

1-1-2007

Abstract

We design a controlled-phase gate for linear optical quantum computing by using photodetectors that cannot resolve photon number. An intrinsic error-correction circuit corrects errors introduced by the detectors. Our controlled-phase gate has a 1/4 success probability. Recent development in cluster-state quantum computing has shown that a two-qubit gate with non-zero success probability can build an arbitrarily large cluster state only with polynomial overhead. Hence, it is possible to generate optical cluster states without number-resolving detectors and with polynomial overhead. © 2007 World Scientific Publishing Company.

Publication Source (Journal or Book title)

International Journal of Quantum Information

First Page

617

Last Page

626

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