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Qubit rotation in QHE

By Dipti Banerjee

Abstract

In Quantum Hall effect the ground state wave function at ν = 1 is the building block of all other states at different filling factors. It is developed by the entanglement of two spinors forming a singlet state. The inherent frustration visualized by the non-abelian matrix Berry phase is responsible for the quantum pumped charge to flow in the Hall surface. The Physics behind the Quantum Hall states is studied here from the view point of topological quantum computation. Key words: spin echo, Berry phase. PACS No:-73.43-f ∗This work of the author (Regular Associate) is partially supported by ICTP,Trieste,Italy

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