| Alternate Scheme for Optical Cluster-State Generation without Number-Resolving Photon Detectors (2006) | |||||||||
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 with only polynomial overhead. Hence, it is possible to generate optical cluster states without number-resolving detectors and with polynomial overhead.. Comment: 10 pages, 4 figures, 4 tables; made significant revisions and changed format | |||||||||
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