Bulletin of the American Physical Society
2023 APS March Meeting
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session G73: Scaling Error Mitigation
11:30 AM–2:30 PM,
Tuesday, March 7, 2023
Room: Room 405
Sponsoring
Unit:
DQI
Chair: Zoe Gonzalez Izquierdo, USRA - Univ Space Rsch Assoc
Abstract: G73.00011 : Assessing phonon trap efficiency through on-chip spatial and energy resolved detection of high energy impacts*
1:54 PM–2:06 PM
Presenter:
Anil Murani
(IQMT and PHI, Karlsruhe Institute of Technology, Germany; Alice & Bob, France)
Authors:
Anil Murani
(IQMT and PHI, Karlsruhe Institute of Technology, Germany; Alice & Bob, France)
Francesco Valenti
(IQMT and PHI, Karlsruhe Institute of Technology, Germany)
Patrick Paluch
(IQMT and PHI, Karlsruhe Institute of Technology, Germany)
Nicolas Gosling
(IQMT and PHI, Karlsruhe Institute of Technology, Germany)
Thomas Reisinger
(IQMT and PHI, Karlsruhe Institute of Technology, Germany)
Robert Kruk
(IQMT, Karlsruhe Institute of Technology, Germany)
Robert Gartmann
(IPE, Karlsruhe Institute of Technology, Germany)
Richard Gebauer
(IPE, Karlsruhe Institute of Technology, Germany)
Oliver Sander
(IPE, Karlsruhe Institute of Technology, Germany)
Ioan-Mihai Pop
(IQMT and PHI, Karlsruhe Institute of Technology, Germany)
In this talk I will present on-chip high energy events detection with both spatial and energy resolution in order to assess the efficiency of phonon traps. We fabricated on the same chip six resonators made of granular aluminum, a high kinetic inductance superconductor which maximizes the device’s susceptibility to Cooper pair breaking. Additionally, our chips were designed to host phonon traps made of aluminum, a lower gap superconductor, similarly to Ref. [1]. Using custom made electronics, we performed simultaneous event detection with time resolution at the nanosecond scale, allowing us to reconstruct the location of the impacts. Additionally, the time response of the resonators provides information about the impact's energy. In light of these results, I will discuss the efficiency of phonon traps in reducing the rate of (correlated) quasiparticle generation from ionizing impacts.
[1] Henriques, Valenti, et.al. Appl. Phys. Lett. 115, 212601 (2019)
*Alexander von Humboldt Foundation
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