Microwave spectroscopy of a weakly-pinned charge density wave in a superinductor
arXiv:1901.01515 · doi:10.1103/PhysRevLett.122.237701
Abstract
A chain of small Josephson junctions (aka 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.
6+8 pages, 2+3 figures
References in corpus (4)
Cited by in corpus (12)
- Inelastic scattering of a photon by a quantum phase-slip
- Critical fluorescence of a transmon at the Schmid transition
- Photon-instanton collider implemented by a superconducting circuit
- Superconductivity from a melted insulator
- Inelastic decay from integrability
- Charge quantization and detector resolution
- Quantum Electronic Circuits for Multicritical Ising Models
- Limitations of Caldeira-Leggett model for description of phase transitions in superconducting circuits
- Transmission of waves through a pinned elastic medium
- Quantum system dynamics with a weakly nonlinear Josephson junction bath
- Quantum simulation of the microscopic to macroscopic crossover using superconducting quantum impurities
- Nonequilibrium plasmon liquid in a Josephson junction chain