Lumped-element Josephson parametric amplifier at 650MHz for nano-calorimeter readout

Visa Vesterinen, Olli-Pentti Saira, Ilmo Räisänen, Mikko Möttönen, Leif Grönberg, Jukka Pekola, Juha Hassel

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Abstract

We design a sub-gigahertz Josephson parametric amplifier for the readout of nanoscale calorimeters which consist of normal-metal-superconductor heterostructures. We characterize the amplifier performance at two operating points, 605 and 655 MHz, corresponding to reproducible local frequency maxima with respect to the applied magnetic flux. At the 655 MHz operating point, the device displays its maximum small-signal gain of 32 dB and gain-bandwidth product of 2π 3.3 MHz. The gain remains above 20 dB for incident powers up to -119 dBm. The added noise of the amplifier, determined by the hot/cold source method, assumes a minimum value of 0.2 K.

Original languageEnglish
Article number085001
JournalSuperconductor Science and Technology
Volume30
Issue number8
DOIs
Publication statusPublished - 27 Jun 2017
MoE publication typeA1 Journal article-refereed

Fingerprint

Parametric amplifiers
Magnetic flux
parametric amplifiers
Calorimeters
Superconducting materials
calorimeters
Heterojunctions
readout
Metals
Display devices
Bandwidth
amplifiers
display devices
magnetic flux
bandwidth
products
metals

Keywords

  • Josephson junction
  • parametric amplifier
  • SQUID array

Cite this

Vesterinen, Visa ; Saira, Olli-Pentti ; Räisänen, Ilmo ; Möttönen, Mikko ; Grönberg, Leif ; Pekola, Jukka ; Hassel, Juha. / Lumped-element Josephson parametric amplifier at 650MHz for nano-calorimeter readout. In: Superconductor Science and Technology. 2017 ; Vol. 30, No. 8.
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Lumped-element Josephson parametric amplifier at 650MHz for nano-calorimeter readout. / Vesterinen, Visa; Saira, Olli-Pentti; Räisänen, Ilmo; Möttönen, Mikko; Grönberg, Leif; Pekola, Jukka; Hassel, Juha.

In: Superconductor Science and Technology, Vol. 30, No. 8, 085001, 27.06.2017.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - Lumped-element Josephson parametric amplifier at 650MHz for nano-calorimeter readout

AU - Vesterinen, Visa

AU - Saira, Olli-Pentti

AU - Räisänen, Ilmo

AU - Möttönen, Mikko

AU - Grönberg, Leif

AU - Pekola, Jukka

AU - Hassel, Juha

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AB - We design a sub-gigahertz Josephson parametric amplifier for the readout of nanoscale calorimeters which consist of normal-metal-superconductor heterostructures. We characterize the amplifier performance at two operating points, 605 and 655 MHz, corresponding to reproducible local frequency maxima with respect to the applied magnetic flux. At the 655 MHz operating point, the device displays its maximum small-signal gain of 32 dB and gain-bandwidth product of 2π 3.3 MHz. The gain remains above 20 dB for incident powers up to -119 dBm. The added noise of the amplifier, determined by the hot/cold source method, assumes a minimum value of 0.2 K.

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