A1 Journal article (refereed)
A Composite Phononic Crystal Design for Quasiparticle Lifetime Enhancement in Kinetic Inductance Detectors (2020)


Puurtinen, T. A.; Rostem, K.; de Visser, P. J.; Maasilta, I. J. (2020). A Composite Phononic Crystal Design for Quasiparticle Lifetime Enhancement in Kinetic Inductance Detectors. Journal of Low Temperature Physics, Early online. DOI: 10.1007/s10909-020-02423-4


JYU authors or editors


Publication details

All authors or editors: Puurtinen, T. A.; Rostem, K.; de Visser, P. J.; Maasilta, I. J.

Journal or series: Journal of Low Temperature Physics

ISSN: 0022-2291

eISSN: 1573-7357

Publication year: 2020

Volume: Early online

Publisher: Springer

Publication country: United States

Publication language: English

DOI: http://doi.org/10.1007/s10909-020-02423-4

Open Access: Open access publication published in a hybrid channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/68237

Web address of parallel published publication (pre-print): https://arxiv.org/abs/1909.10316


Abstract

A nanoscale phononic crystal filter (reflector) is designed for a kinetic inductance detector where the reflection band is matched to the quasiparticle recombination phonons with the aim to increase quasiparticle lifetime in the superconducting resonator. The inductor is enclosed by a 1-μm-wide phononic crystal membrane section with two simple hole patterns that each contain a partial spectral gap for various high-frequency phonon modes. The phononic crystal is narrow enough for low-frequency thermal phonons to propagate unimpeded. With 3D phonon scattering simulation over a 40 dB attenuation in transmitted power is found for the crystal, which is estimated to give a lifetime enhancement of nearly two orders of magnitude.


Keywords: phonons; finite element method; heat conduction

Free keywords: phononic crystal; kinetic inductance detector; finite element method; phonon scattering


Contributing organizations


Related projects

Coherent and Incoherent Heat Transport with Nanophononics
Maasilta, Ilari
Academy of Finland
01/09/2016-31/08/2020


Ministry reporting: Yes

Reporting Year: 2020

Preliminary JUFO rating: 1


Last updated on 2020-09-07 at 23:12