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

doi:10.1088/1361-6668/aa73ed

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 journal › Article › Scientific › peer-review

6 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 language	English
Article number	085001
Journal	Superconductor Science and Technology
Volume	30
Issue number	8
DOIs	https://doi.org/10.1088/1361-6668/aa73ed
Publication status	Published - 27 Jun 2017
MoE publication type	A1 Journal article-refereed

Keywords

Josephson junction
parametric amplifier
SQUID array

Access to Document

10.1088/1361-6668/aa73ed

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title = "Lumped-element Josephson parametric amplifier at 650MHz for nano-calorimeter readout",

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.",

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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 journal › Article › Scientific › peer-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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