2013/11/30 by Samuele Spilla, Fabian Hassler, Janine Splettstoesser · 16 citations
Computer Science · Materials Science · Physics and Astronomy · #Chemical and Physical Properties of Materials #Coherence (philosophical gambling strategy) #Current (fluid) #Dephasing #Flux qubit #Heat current #Microsecond #Phase qubit #Quantum Information and Cryptography #Quantum and electron transport phenomena #Qubit #Superconductivity #cond-mat.mes-hall #quant-ph
paper · pdf · doi:10.1088/1367-2630/16/4/045020
published in New Journal of Physics 16(4), 045020 (IOP Publishing) · 19 pages, 6 figures, published version
openalex publication_date 2014/04/25 · arxiv created 2015/01/07 · arxiv updated 2015/01/08 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
We study a flux qubit made of a superconducting loop interrupted by three Josephson junctions, which is subject to a temperature gradient. We show that the heat current induced by the temperature gradient, being sensitive to the superconducting phase differences at the junctions, depends significantly on the state of the qubit. We furthermore investigate the impact of the heat current on the coherence properties of the qubit state. We have found that even small temperature gradients can lead to dephasing times of the order of microseconds for the Delft-qubit design.