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Failure of protection of Majorana based qubits against decoherence
Jan Carl Budich, Stefan Walter, Bjoern Trauzettel
Qubit realizations based on Majorana bound states have been considered promising candidates for quantum information processing which is inherently inert to decoherence. We put the…
Phonon induced backscattering in helical edge states
Jan Carl Budich, Fabrizio Dolcini, Patrik Recher +1
A single pair of helical edge states as realized at the boundary of a quantum spin Hall insulator is known to be robust against elastic single particle backscattering as long as ti…
Tunable quantum spin Hall effect in double quantum wells
Paolo Michetti, Jan C. Budich, Elena G. Novik +1
The field of topological insulators (TIs) is rapidly growing. Concerning possible applications, the search for materials with an easily controllable TI phase is a key issue. The qu…
Local topological phase transitions in periodic condensed matter systems
Jan Carl Budich, Björn Trauzettel
Topological properties of a periodic condensed matter system are global features of its Brillouin zone (BZ). In contrast, the validity of effective low energy theories is usually l…