학술논문
A Stress Induced Source of Phonon Bursts and Quasiparticle Poisoning
Document Type
Working Paper
Author
Anthony-Petersen, Robin; Biekert, Andreas; Bunker, Raymond; Chang, Clarence L.; Chang, Yen-Yung; Chaplinsky, Luke; Fascione, Eleanor; Fink, Caleb W.; Garcia-Sciveres, Maurice; Germond, Richard; Guo, Wei; Hertel, Scott A.; Hong, Ziqing; Kurinsky, Noah; Li, Xinran; Lin, Junsong; Lisovenko, Marharyta; Mahapatra, Rupak; Mayer, Adam; McKinsey, Daniel N.; Mehrotra, Siddhant; Mirabolfathi, Nader; Neblosky, Brian; Page, William A.; Patel, Pratyush K.; Penning, Bjoern; Pinckney, H. Douglas; Platt, Mark; Pyle, Matt; Reed, Maggie; Romani, Roger K.; Queiroz, Hadley Santana; Sadoulet, Bernard; Serfass, Bruno; Smith, Ryan; Sorensen, Peter F.; Suerfu, Burkhant; Suzuki, Aritoki; Underwood, Ryan; Velan, Vetri; Wang, Gensheng; Wang, Yue; Watkins, Samuel L.; Williams, Michael R.; Yefremenko, Volodymyr; Zhang, Jianjie
Source
Nat. Commun. 15, 6444 (2024)
Subject
Language
Abstract
The performance of superconducting qubits is degraded by a poorly characterized set of energy sources breaking the Cooper pairs responsible for superconductivity, creating a condition often called ``quasiparticle poisoning". Both superconducting qubits and low threshold dark matter calorimeters have observed excess bursts of quasiparticles or phonons that decrease in rate with time. Here, we show that a silicon crystal glued to its holder exhibits a rate of low-energy phonon events that is more than two orders of magnitude larger than in a functionally identical crystal suspended from its holder in a low-stress state. The excess phonon event rate in the glued crystal decreases with time since cooldown, consistent with a source of phonon bursts which contributes to quasiparticle poisoning in quantum circuits and the low-energy events observed in cryogenic calorimeters. We argue that relaxation of thermally induced stress between the glue and crystal is the source of these events.
Comment: 19 pages (main + supplementary), 6 figures. W. A. Page and R. K. Romani contributed equally to this work. Correspondence should be addressed to R. K. Romani
Comment: 19 pages (main + supplementary), 6 figures. W. A. Page and R. K. Romani contributed equally to this work. Correspondence should be addressed to R. K. Romani