% IMPORTANT: The following is UTF-8 encoded. This means that in the presence % of non-ASCII characters, it will not work with BibTeX 0.99 or older. % Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or % “biber”. @ARTICLE{Viola:280119, author = {Viola, Giovanni and Catelani, Gianluigi}, title = {{C}ollective modes in the fluxonium qubit}, journal = {Physical review / B}, volume = {92}, number = {22}, issn = {1098-0121}, address = {College Park, Md.}, publisher = {APS}, reportid = {FZJ-2015-07865}, pages = {224511}, year = {2015}, abstract = {Superconducting qubit designs vary in complexity from single- and few-junction systems, such as the transmon and flux qubits, to the many-junction fluxonium. Here, we consider the question of whether the many degrees of freedom in the fluxonium circuit can limit the qubit coherence time. Such a limitation is in principle possible, due to the interactions between the low-energy, highly anharmonic qubit mode and the higher-energy, weakly anharmonic collective modes. We show that so long as the coupling of the collective modes with the external electromagnetic environment is sufficiently weaker than the qubit-environment coupling, the qubit dephasing induced by the collective modes does not significantly contribute to decoherence. Therefore, the increased complexity of the fluxonium qubit does not constitute by itself a major obstacle for its use in quantum computation architectures.}, cin = {PGI-2}, ddc = {530}, cid = {I:(DE-Juel1)PGI-2-20110106}, pnm = {144 - Controlling Collective States (POF3-144)}, pid = {G:(DE-HGF)POF3-144}, typ = {PUB:(DE-HGF)16}, UT = {WOS:000367060600005}, doi = {10.1103/PhysRevB.92.224511}, url = {https://juser.fz-juelich.de/record/280119}, }