A stress-induced source of phonon bursts and quasiparticle poisoning
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Published:2024-07-31
Issue:1
Volume:15
Page:
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ISSN:2041-1723
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Container-title:Nature Communications
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language:en
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Short-container-title:Nat Commun
Author:
Anthony-Petersen Robin, Biekert Andreas, Bunker Raymond, Chang Clarence L., Chang Yen-Yung, Chaplinsky LukeORCID, Fascione Eleanor, Fink Caleb W., Garcia-Sciveres Maurice, Germond Richard, Guo WeiORCID, Hertel Scott A., Hong ZiqingORCID, Kurinsky Noah, Li Xinran, Lin Junsong, Lisovenko Marharyta, Mahapatra RupakORCID, Mayer Adam, McKinsey Daniel N., Mehrotra Siddhant, Mirabolfathi Nader, Neblosky Brian, Page William A., Patel Pratyush K.ORCID, Penning Bjoern, Pinckney H. Douglas, Platt Mark, Pyle Matt, Reed MaggieORCID, Romani Roger K.ORCID, Santana Queiroz Hadley, Sadoulet Bernard, Serfass Bruno, Smith Ryan, Sorensen Peter, Suerfu Burkhant, Suzuki Aritoki, Underwood Ryan, Velan VetriORCID, Wang Gensheng, Wang YueORCID, Watkins Samuel L.ORCID, Williams Michael R., Yefremenko Volodymyr, Zhang Jianjie
Abstract
AbstractThe 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.
Funder
DOE | LDRD | Lawrence Berkeley National Laboratory DOE | LDRD | Pacific Northwest National Laboratory DOE | SC | High Energy Physics National High Magnetic Field Laboratory
Publisher
Springer Science and Business Media LLC
Reference35 articles.
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