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Microwave Spectroscopy of a Weakly Pinned Charge Density Wave in a Superinductor.

08:00 EDT 14th June 2019 | BioPortfolio

Summary of "Microwave Spectroscopy of a Weakly Pinned Charge Density Wave in a Superinductor."

A chain of small Josephson junctions (a.k.a. superinductor) emerged recently as a high-inductance, low-loss element of superconducting quantum devices. We notice that the intrinsic parameters of a typical superinductor in fact place it into the Bose glass universality class for which the propagation of waves in a sufficiently long chain is hindered by pinning. Its weakness provides for a broad crossover from the spectrum of well-resolved plasmon standing waves at high frequencies to the low-frequency excitation spectrum of a pinned charge density wave. We relate the scattering amplitude of microwave photons reflected off a superinductor to the dynamics of a Bose glass. The dynamics at long and short scales compared to the Larkin pinning length determines the low- and high-frequency asymptotes of the reflection amplitude.

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This article was published in the following journal.

Name: Physical review letters
ISSN: 1079-7114
Pages: 237701

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