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Surface tunneling microscope image of the Mach-Zehnder interferometer

CAREER: Non-Equilibrium Transport and Disorder Effects in Quantum Wires and Related Systems Dmitri Feldman, Brown University, DMR-0544116.

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Surface tunneling microscope image of the Mach-Zehnder interferometer

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  1. CAREER: Non-Equilibrium Transport and Disorder Effects in Quantum Wires and Related SystemsDmitri Feldman, Brown University, DMR-0544116 Quantum computers promise an enormous increase in computational power. They will be based on nanoscale systems whose behavior is governed by Quantum Mechanics. Such small systems are strongly disturbed by the interaction with the outside world and this poses a major challenge for a practical implementation of quantum computing. The interactions would not affect hypotetical “non-Abelian quasiparticles”. It was proposed that such particles might be found in thin semi-conductor films in strong magnetic fields. We suggest an experimental test of their exis-tence. It is based on measuring the magnetic field dependence of the electric current through an electronic Mach-Zehnder interfe- rometer whose edges serve as quantum wires with non-Abelian particles. Surface tunneling microscope image of the Mach-Zehnder interferometer [Y. Ji et al., Nature 422, 415 (2003) ]

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