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arXiv · 1311.7604

Exact zero modes and decoherence in systems of interacting Majorana fermions

Guang Yang·D. E. Feldman
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Abstract

Majorana fermions often coexist with other low-energy fermionic degrees of freedom. In such situation, topological quantum computation requires the use of fermionic zero modes of a many-body system. We classify all such modes for interacting fermions and show how to select the mode that maximizes the decoherence time. We find that in a typical interacting system the maximal decoherence time is within one order of magnitude from the decoherence time of a qbit based on the local part of the fermion parity operator.

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Guang Yang, D. E. Feldman. 2013-11-29. Exact zero modes and decoherence in systems of interacting Majorana fermions. https://doi.org/10.1103/physrevb.89.035136

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