Raman coherence effects in a superconducting Jaynes-Cummings system

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dc.contributor.advisorWellstood, Frederick Cen_US
dc.contributor.advisorPalmer, Benjamin Sen_US
dc.contributor.authorNovikov, Sergeyen_US
dc.contributor.departmentPhysicsen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2015-09-18T05:34:34Z
dc.date.available2015-09-18T05:34:34Z
dc.date.issued2015en_US
dc.description.abstractThis dissertation describes a study of Raman coherence effects using superconducting quantum circuits. Raman coherence can occur in a three-level system driven by two coherent electromagnetic fields. In a suitable system with a metastable state, the effect is typically manifest as coherent population trapping (CPT) and electromagnetically induced transparency (EIT). I derive the theoretical framework and show experimentally that in the case of a cascade three-level system based on transmon superconducting qubit states, an effect known as the Autler-Townes doublet (ATD), rather than CPT or EIT, occurs. I propose, model, and implement a quasi- system made of combined transmon-cavity levels, which has a meta-stable state required for CPT and EIT. I measure CPT, and demonstrate coherence of the dark state in the time domain. Instead of EIT, I observe a new phenomenon – electromagnetically suppressed transmission (EST). The large negative dispersion accompanying EST leads to superluminal pulse propagation in the system. My results suggest that quantum superconducting circuits provide a viable platform for studying quantum optics of multi-level systems.en_US
dc.identifierhttps://doi.org/10.13016/M2TD1M
dc.identifier.urihttp://hdl.handle.net/1903/16910
dc.language.isoenen_US
dc.subject.pqcontrolledPhysicsen_US
dc.subject.pqcontrolledCondensed matter physicsen_US
dc.subject.pqcontrolledQuantum physicsen_US
dc.subject.pquncontrolledquantum computingen_US
dc.subject.pquncontrolledquantum opticsen_US
dc.subject.pquncontrolledsuperconducting qubitsen_US
dc.titleRaman coherence effects in a superconducting Jaynes-Cummings systemen_US
dc.typeDissertationen_US

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