2019/01/06 by Manuel Houzet, L. I. Glazman, Leonid I. Glazman
Physics and Astronomy · #Amplitude #Charge density wave #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Josephson effect #Optics #Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Scattering #Superconductivity #cond-mat.mes-hall #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.122.237701
published as Phys. Rev. Lett. 122, 237701 (2019) · 6+8 pages, 2+3 figures
arxiv created 2019/01/06 · openalex publication_date 2019/06/13 · arxiv updated 2019/06/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.