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Single Artificial-Atom Lasing of a Dressed Flux Qubit

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Single Artificial-Atom Lasing of a Dressed Flux Qubit (English shop)

Gregor Oelsner (Author)

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ISBN-13 (Hard Copy) 9783736994676
ISBN-13 (eBook) 9783736984677
Language English
Page Number 160
Lamination of Cover matt
Edition 1. Aufl.
Publication Place Göttingen
Place of Dissertation Jena
Publication Date 2017-02-07
General Categorization Dissertation
Departments Physics
Keywords Two-Level System, Quantum Physics, Cavity Quantum Electrodynamics, Maxwell-Bloch equations, Lindbed equation Low Temperatures, Superconductivity, Einzel-atom-Lasing, Zwei-Niveau System, Quantenphysik, Tiefe Temperaturen, Supraleitung
Description

Superconducting quantum bits originally developed for quantum computation have properties similar to real atoms. Because they are micro fabricated circuits, their interaction with electromagnetic radiation can be engineered and effects known from quantum optics may be realized.
In this work, a unique lasing scheme exploiting only the lowest two levels of a single artificial atom coupled to a high-quality superconducting resonator is experimentally realized. It is based on the dressing of the atom’s states by a strong signal and the associated rescaling of the relaxation. In addition, basic physical processes are discussed by a separate characterization of the artificial atom, the resonator, and their coupling. A quantum theory including dissipative processes is developed from basic superconducting effects and its applicability demonstrated by a perfect agreement with the experimental results. It gives an illustrative insight into the physics of atom-photon interaction.