Low-noise current amplifier based on mesoscopic Josephson junction

J. Delahaye (Corresponding Author), Juha Hassel, R. Lindell, M. Sillanpää, M. Paalanen, Heikki Seppä, P. Hakonen

Research output: Contribution to journalArticleScientificpeer-review

49 Citations (Scopus)

Abstract

We used the band structure of a mesoscopic Josephson junction to construct low-noise amplifiers. By taking advantage of the quantum dynamics of a Josephson junction, i.e., the interplay of interlevel transitions and the Coulomb blockade of Cooper pairs, we created transistor-like devices, Bloch oscillating transistors, with considerable current gain and high-input impedance. In these transistors, the correlated supercurrent of Cooper pairs is controlled by a small base current made up of single electrons. Our devices reached current and power gains on the order of 30 and 5, respectively. The noise temperature was estimated to be around 1 kelvin, but noise temperatures of less than 0.1 kelvin can be realistically achieved. These devices provide quantum-electronic building blocks that will be useful at low temperatures in low-noise circuit applications with an intermediate impedance level.
Original languageEnglish
Pages (from-to)1045-1048
Number of pages4
JournalScience
Volume299
Issue number5609
DOIs
Publication statusPublished - 2003
MoE publication typeA1 Journal article-refereed

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current amplifiers
Josephson junctions
low noise
noise temperature
transistors
impedance
quantum electronics
power gain
amplifiers
electrons

Keywords

  • Josephson junction

Cite this

Delahaye, J., Hassel, J., Lindell, R., Sillanpää, M., Paalanen, M., Seppä, H., & Hakonen, P. (2003). Low-noise current amplifier based on mesoscopic Josephson junction. Science, 299(5609), 1045-1048. https://doi.org/10.1126/science.299.5609.1045
Delahaye, J. ; Hassel, Juha ; Lindell, R. ; Sillanpää, M. ; Paalanen, M. ; Seppä, Heikki ; Hakonen, P. / Low-noise current amplifier based on mesoscopic Josephson junction. In: Science. 2003 ; Vol. 299, No. 5609. pp. 1045-1048.
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abstract = "We used the band structure of a mesoscopic Josephson junction to construct low-noise amplifiers. By taking advantage of the quantum dynamics of a Josephson junction, i.e., the interplay of interlevel transitions and the Coulomb blockade of Cooper pairs, we created transistor-like devices, Bloch oscillating transistors, with considerable current gain and high-input impedance. In these transistors, the correlated supercurrent of Cooper pairs is controlled by a small base current made up of single electrons. Our devices reached current and power gains on the order of 30 and 5, respectively. The noise temperature was estimated to be around 1 kelvin, but noise temperatures of less than 0.1 kelvin can be realistically achieved. These devices provide quantum-electronic building blocks that will be useful at low temperatures in low-noise circuit applications with an intermediate impedance level.",
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Delahaye, J, Hassel, J, Lindell, R, Sillanpää, M, Paalanen, M, Seppä, H & Hakonen, P 2003, 'Low-noise current amplifier based on mesoscopic Josephson junction', Science, vol. 299, no. 5609, pp. 1045-1048. https://doi.org/10.1126/science.299.5609.1045

Low-noise current amplifier based on mesoscopic Josephson junction. / Delahaye, J. (Corresponding Author); Hassel, Juha; Lindell, R.; Sillanpää, M.; Paalanen, M.; Seppä, Heikki; Hakonen, P.

In: Science, Vol. 299, No. 5609, 2003, p. 1045-1048.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Low-noise current amplifier based on mesoscopic Josephson junction

AU - Delahaye, J.

AU - Hassel, Juha

AU - Lindell, R.

AU - Sillanpää, M.

AU - Paalanen, M.

AU - Seppä, Heikki

AU - Hakonen, P.

PY - 2003

Y1 - 2003

N2 - We used the band structure of a mesoscopic Josephson junction to construct low-noise amplifiers. By taking advantage of the quantum dynamics of a Josephson junction, i.e., the interplay of interlevel transitions and the Coulomb blockade of Cooper pairs, we created transistor-like devices, Bloch oscillating transistors, with considerable current gain and high-input impedance. In these transistors, the correlated supercurrent of Cooper pairs is controlled by a small base current made up of single electrons. Our devices reached current and power gains on the order of 30 and 5, respectively. The noise temperature was estimated to be around 1 kelvin, but noise temperatures of less than 0.1 kelvin can be realistically achieved. These devices provide quantum-electronic building blocks that will be useful at low temperatures in low-noise circuit applications with an intermediate impedance level.

AB - We used the band structure of a mesoscopic Josephson junction to construct low-noise amplifiers. By taking advantage of the quantum dynamics of a Josephson junction, i.e., the interplay of interlevel transitions and the Coulomb blockade of Cooper pairs, we created transistor-like devices, Bloch oscillating transistors, with considerable current gain and high-input impedance. In these transistors, the correlated supercurrent of Cooper pairs is controlled by a small base current made up of single electrons. Our devices reached current and power gains on the order of 30 and 5, respectively. The noise temperature was estimated to be around 1 kelvin, but noise temperatures of less than 0.1 kelvin can be realistically achieved. These devices provide quantum-electronic building blocks that will be useful at low temperatures in low-noise circuit applications with an intermediate impedance level.

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Delahaye J, Hassel J, Lindell R, Sillanpää M, Paalanen M, Seppä H et al. Low-noise current amplifier based on mesoscopic Josephson junction. Science. 2003;299(5609):1045-1048. https://doi.org/10.1126/science.299.5609.1045