Dispersion engineering of superconducting waveguides for multi-pixel integration of single-photon detectors

Ali W. Elshaari, Adrian Iovan, Samuel Gyger, Iman Esmaeil Zadeh, Julien Zichi, Lily Yang, Stephan Steinhauer, Val Zwiller

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)
14 Downloads (Pure)

Abstract

We use dispersion engineering to control the signal propagation speed in the feed lines of superconducting single-photon detectors. Using this technique, we demonstrate time-division-multiplexing of two-pixel detectors connected with a slow-RF transmission line, all realized using planar geometry requiring a single lithographic step. Through studying the arrival time of detection events in each pixel vs the fabricated slow-RF coplanar waveguide length, we extract a delay of 1.7 ps per 1 μm of propagation, corresponding to detection signal speeds of ∼0.0019c. Our results open an important avenue to explore the rich ideas of dispersion engineering and metamaterials for superconducting detector applications.

Original languageEnglish
Article number111301
JournalAPL Photonics
Volume5
Issue number11
DOIs
Publication statusPublished - 2020

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