A travelling-wave parametric amplifier utilizing Josephson junctions

Sweeny, M.; Mahler, R. J.

doi:10.1109/tmag.1985.1063777

Cited by 33 publications

(23 citation statements)

References 7 publications

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“…A major challenge in the design of TWPAs, however, is that optimum parametric gain is achieved only when the amplification process is phase matched. TWPAs based on Josephson junctions have been investigated theoretically [22][23][24][25] and experimentally [26-28] but have not demonstrated sufficient gain, in part due to phase-matching limitations, to replace existing semiconductor amplifier technology. TWPAs based on the weaker nonlinear kinetic inductance of thin titanium nitride wires and phase matched through periodic loading have also been demonstrated [29,30], but they require significantly longer propagation lengths and higher pump powers to achieve comparable gain.…”

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confidence: 99%

Resonant Phase Matching of Josephson Junction Traveling Wave Parametric Amplifiers

et al. 2014

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We propose a technique to overcome phase mismatch in Josephson-junction traveling wave parametric amplifiers in order to achieve high gain over a broad bandwidth. Using "resonant phase matching," we design a compact superconducting device consisting of a transmission line with subwavelength resonant inclusions that simultaneously achieves a gain of 20 dB, an instantaneous bandwidth of 3 GHz, and a saturation power of -98 dBm. Such an amplifier is well suited to cryogenic broadband microwave measurements such as the multiplexed readout of quantum coherent circuits based on superconducting, semiconducting, or nanomechanical elements, as well as traditional astronomical detectors.

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confidence: 99%

Resonant Phase Matching of Josephson Junction Traveling Wave Parametric Amplifiers

et al. 2014

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“…In this pioneering experiment a gain of 10 dB and a bandwidth of 3 MHz were shown. After the theorizing and the subsequent discovery of the Josephson effect [2], it was understood that an easy way to embed a non-linear component into a transmission line and simultaneously reduce losses, was to build a non-linear inductance made of superconducting material, exploiting a Josephson junction as a source of non-linearity following the vanguard idea by M. Sweeny and R. Mahler [13]. There the parametric amplifier was modeled by a first-order small-signal theory with the same approach adopted to predict the behaviour of GaAsFET transmission line amplifiers.…”

Section: Historical Evolution Of the Travelling Wave Parametric Amplimentioning

confidence: 99%

“…As an example, a weak signal travelling in a metamaterial can interact with a strong pump tone at a different frequency, activating the so called parametric amplification [12]. The class of devices where these phenomena are promoted is commonly known as Travelling Wave Josephson Parametric Amplifiers (TWJPA) and represents the solid state analogous to optical χ n nonlinear crystals [13].…”

Section: Introductionmentioning

confidence: 99%

Superconducting Josephson-Based Metamaterials for Quantum-Limited Parametric Amplification: A Review

Fasolo¹,

Greco²,

Enrico³

2020

Advances in Condensed-Matter and Materials Physics - Rudimentary Research to Topical Technology

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In the last few years, several groups have proposed and developed their own platforms demonstrating quantum-limited linear parametric amplification, with evident applications in quantum information and computation, electrical and optical metrology, radio astronomy and basic physics concerning axion detection. Here we propose a short review on the physics behind parametric amplification via metamaterials composed by coplanar wave-guides embedding several Josephson junctions. We present and compare different schemes that exploit the nonlinearity of the Josephson current-phase relation to mix the so-called signal, idler and pump tones. The chapter then presents and compares three different theoretical models, developed in the last few years, to predict the dynamics of these nonlinear systems in the particular case of a 4-Wave Mixing process and under the degenerate undepleted pump assumption. We will demonstrate that, under the same assumption, all the results are comparable in terms of amplification of the output fields. arXiv:1908.06889v1 [cond-mat.supr-con]

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“…This configuration constitutes a distributed parametric amplifier since the length of the array of junctions, 9 mm, greatly exceeds the calculated wavelength of 0.65 mm for the 19 GHz signals propagating along the coplanar waveguide. Distributed parametric amplifiers of this type have been discussed in the literature 11 . The amplifier was pumped at the signal carrier frequency, the so-called doubly degenerate mode of operation.…”

Section: ͓S0003-6951͑96͒03546-2͔mentioning

confidence: 99%

A low-noise series-array Josephson junction parametric amplifier

Yurke¹,

Roukes²,

Movshovich³

et al. 1996

Applied Physics Letters

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We have obtained parametric gain at 19 GHz from a distributed Josephson junction parametric amplifier whose active gain medium consists of a series array of 1000 Josephson junctions embedded in a coplanar waveguide. When cooled to 1.7 K the amplifier provides 16 dB gain in a mode where the internally generated double sideband noise referred to input is 0.5±0.1 K. This noise is consistent with Nyquist noise generated from the losses. An instantaneous bandwidth of 125 MHz has been observed with a peak gain of 12 dB. The 3 dB compression point with a peak gain of 14.6 dB is -90.5 dB and the dynamic range is 38 dB.

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A travelling-wave parametric amplifier utilizing Josephson junctions

Cited by 33 publications

References 7 publications

Resonant Phase Matching of Josephson Junction Traveling Wave Parametric Amplifiers

Resonant Phase Matching of Josephson Junction Traveling Wave Parametric Amplifiers

Superconducting Josephson-Based Metamaterials for Quantum-Limited Parametric Amplification: A Review

A low-noise series-array Josephson junction parametric amplifier

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