Initialization of a nuclear spin system over the quantum Hall regime for quantum information processing

Details Initialization of a nuclear spin system over the quantum Hall regime for quantum information processing Initialization of a nuclear spin system over the quantum Hall regime for quantum information processing

2003-08-25

arxiv.org/abs/cond-mat/0308501v1

Proceedings of 15th International Conference on the Application of High Magnetic Fields in Semiconductor Physics, Oxford, 5-9

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

The application of the quantum mechanical properties of physical systems to realize novel computational schemes and innovative device functions have been topics of recent interest. Proposals for associated devices are to be found in diverse branches of physics. Here, we are concerned with the experimental realization of some elements needed for quantum information processing using nuclear spin immersed in a confined electronic system in the quantum Hall regime. Thus, we follow a spin-handling approach that (a) uses the Overhauser effect in the quantum Hall regime to realize a large nuclear polarization at relatively high temperatures, (b) detects the nuclear spin state by measuring the influence of the associated magnetic field on Electron Spin Resonance, and (c) seeks to apply the electronic spin exciton as the spin transfer mechanism. Some measurements examining the viability of this approach are shown, and the utility of the approach for initializing a nuclear spin system at a relatively high temperature is pointed out

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