Decoherence of a solid state based qubit can be caused by coupling to microscopic degrees of freedom in the solid. We lay out a simple theory and use it to estimate decoherence for a recently proposed superconducting persistent current design. All considered sources of decoherence are found to be quite weak, leading to a high quality factor for this qubit.
CITATION STYLE
Tian, L., Levitov, L. S., Wal, C. H., Mooij, J. E., Orlando, T. P., Lloyd, S., … Mazo, J. J. (2000). Decoherence of the Superconducting Persistent Current Qubit. In Quantum Mesoscopic Phenomena and Mesoscopic Devices in Microelectronics (pp. 429–438). Springer Netherlands. https://doi.org/10.1007/978-94-011-4327-1_28
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