Long hold times in a two-junction electron trap
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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3
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Applied Physics Letters, Volume 99, issue 14, pp. 1-3
Abstract
The hold time τ of a single-electron trap is shown to increase significantly due to suppression of photon assisted tunneling events. Using two rf-tight radiation shields instead of a single one, we demonstrate increase of τ by a factor exceeding 103, up to about 10 h, for a trap with only two superconductor (S)—normal-metal (N) tunnel junctions and an on-chip resistor R ∼ 100 kΩ (R-SNS structure). In the normal state, the improved shielding made it possible to observe τ ∼ 100 s, which is in reasonable agreement with the quantum-leakage-limited level expected for the two-electron cotunneling process.Description
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Kemppinen, A, Lotkhov, S V, Saira, O-P, Zorin, A B, Pekola, J P & Manninen, A J 2011, 'Long hold times in a two-junction electron trap', Applied Physics Letters, vol. 99, no. 14, 142106, pp. 1-3. https://doi.org/10.1063/1.3647557