Quantum computation in quantum-Hall systems |
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| Institution: | 1. Department of Physics, Clarkson University, Potsdam, NY 13699-5820, USA;2. Grenoble High Magnetic Field Laboratory, Max-Planck-Institut für Festkörperforschung, and Centre National de la Recherche Scientifique, BP 166, F-38042, Grenoble Cedex 9, France;3. Department of Chemistry, Technion - Israel Institute of Technology, Haifa 32000, Israel;1. Instituto de Física, Universidade Federal de Uberlândia, 38400-902, Uberlândia, MG, Brazil;2. Departamento de Física, Universidade Federal de São Carlos, 13565-905, São Carlos, SP, Brazil;1. Laboratoire Photonique Numérique et Nanosciences (LP2N), Université Bordeaux-IOGS-CNRS: UMR 5298, Talence, France;2. Materials Science Department, School of Natural Sciences, University of Patras, Patras 265 04, Greece;1. Defence Metallurgical Research Laboratory, Hyderabad, India;2. Department of Metallurgical and Materials Engineering, National Institute of Technology, Warangal, India;3. Department of Physics, Indian Institute of Technology Hyderabad, Sangareddy, India |
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| Abstract: | We describe a quantum information processor (quantum computer) based on the hyperfine interactions between the conduction electrons and nuclear spins embedded in a two-dimensional electron system in the quantum-Hall regime. Nuclear spins can be controlled individually by electromagnetic pulses. Their interactions, which are of the spin-exchange type, can be possibly switched on and off pair-wise dynamically, for nearest neighbors, by controlling impurities. We also propose the way to feed in the initial data and explore ideas for reading off the final results. |
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