Lagana, A.Lohe, M.Von Smekal, L.Adesso, G.2012-04-272012-04-272011PLoS One, 2011; 6(12):1-51932-62031932-6203http://hdl.handle.net/2440/70554Extent: 5p.We present a scheme to use external quantum devices using the universal quantum computer previously constructed. We thereby show how the universal quantum computer can utilize networked quantum information resources to carry out local computations. Such information may come from specialized quantum devices or even from remote universal quantum computers. We show how to accomplish this by devising universal quantum computer programs that implement well known oracle based quantum algorithms, namely the Deutsch, Deutsch-Jozsa, and the Grover algorithms using external black-box quantum oracle devices. In the process, we demonstrate a method to map existing quantum algorithms onto the universal quantum computer.en© 2011 Lagana et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.Quantum TheoryComputersJournal article002011643810.1371/journal.pone.00294170003006763000572-s2.0-8455521897925936Lohe, M. [0000-0002-5214-2225]