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DOI: 10.5445/IR/1000074349

Decoherence in microscopic two-level systems and in analog quantum simulators

Zanker, Sebastian

Abstract:
Quantum simulation is a promising field for first applications of quantum computers.
In the first part of this work we study effects of decoherence in analog quantum simulators using many-body methods for systems out of equilibrium.
In the second part we study the interplay between two important sources of decoherence, namely quasiparticle excitations in superconductors and low-energy excitations in amorphous layers. The latter are described within the phenomenological tunneling-system model.


Zugehörige Institution(en) am KIT Institut für Theoretische Festkörperphysik (TFP)
Publikationstyp Hochschulschrift
Jahr 2017
Sprache Englisch
Identifikator URN: urn:nbn:de:swb:90-743498
KITopen ID: 1000074349
Verlag Karlsruhe
Umfang XII, 157 S.
Abschlussart Dissertation
Fakultät Fakultät für Physik (PHYSIK)
Institut Institut für Theoretische Festkörperphysik (TFP)
Prüfungsdatum 14.07.2017
Referent/Betreuer Prof. G. Schön
Schlagworte Quantum computing; Quantum simulation; Analog quantum simulation; Decoherence; Two-level-systems; Quasiparticles; Superconducting qubits
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