Non-equilibrium quasiparticles can deteriorate the performance of superconducting qubits by reducing their coherence. We are investigating a source of quasiparticles that has been too long neglected, namely radioactivity: cosmic rays, environmental radioactivity and contaminants in the materials can all generate phonons of energy sufficient to break Cooper pairs and thus increase the number of quasiparticles. In this contribution, we describe the status of the project and its perspectives.

Cardani, L., Casali, N., Catelani, G., Charpentier, T., Clemenza, M., Colantoni, I., et al. (2020). DEMETRA: Suppression of the Relaxation Induced by Radioactivity in Superconducting Qubits. JOURNAL OF LOW TEMPERATURE PHYSICS, 199(1-2), 475-481 [10.1007/s10909-019-02265-9].

DEMETRA: Suppression of the Relaxation Induced by Radioactivity in Superconducting Qubits

Clemenza M.;Gironi L.;
2020

Abstract

Non-equilibrium quasiparticles can deteriorate the performance of superconducting qubits by reducing their coherence. We are investigating a source of quasiparticles that has been too long neglected, namely radioactivity: cosmic rays, environmental radioactivity and contaminants in the materials can all generate phonons of energy sufficient to break Cooper pairs and thus increase the number of quasiparticles. In this contribution, we describe the status of the project and its perspectives.
Articolo in rivista - Articolo scientifico
Kinetic inductance detectors; Quantum bits; Radioactivity
English
25-nov-2019
2020
199
1-2
475
481
none
Cardani, L., Casali, N., Catelani, G., Charpentier, T., Clemenza, M., Colantoni, I., et al. (2020). DEMETRA: Suppression of the Relaxation Induced by Radioactivity in Superconducting Qubits. JOURNAL OF LOW TEMPERATURE PHYSICS, 199(1-2), 475-481 [10.1007/s10909-019-02265-9].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/268223
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