Economical and noisy one-way quantum computing. - Mark Tame

First, I would like to introduce several aspects of cluster-state quantum computing in the presence of noise and decoherence [1]. This will then allow me to talk in more detail about recent developments in economical strategies for quantum information processing [2, 3], that greatly improve the efficiency and scalability of the original "one-way model for quantum computation" [4, 5]. Then, I will go on to discuss some details concerning compact cluster configurations for two very interesting quantum algorithms [6, 7]. One of these [6] has recently been experimentally performed in Vienna and the other [7] is certainly feasible with current all-optical technology. References: [1] M. S. Tame et al. quant-ph/0412156 (2004); M. S. Tame et al. Phys. Rev. A 72, 012319 (2005). [2] M. S. Tame et al., quant-ph/0507173 (2005). [3] S. C. Benjamin et al., New J. Phys. 7, 194 (2005). [4] R. Raussendorf & H. J. Briegel, Phys. Rev. Lett., 86, 5188-5191 (2001). [5] R. Raussendorf, D. E. Browne & H. J. Briegel, Phys. Rev. A 68, 022312 (2003). [6] P. Walther et al., Nature 434 169 (2005). [7] M. Paternostro et al. quant-ph/0509066 (2005) [to appear in NJP].