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Performance of a Kinetic-Inductance Traveling-Wave Parametric Amplifier at 4 Kelvin: Toward an Alternative to Semiconductor Amplifiers
Maxime Malnou,Jose Aumentado,Michael R. Vissers,Jordan Wheeler,J. Hubmayr,J. N. Ullom,Jiansong Gao +6 more
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TLDR
In this paper, an amplification chain consisting of a kinetic-inductance traveling-wave parametric amplifier (KI-TWPA) placed at 4 K, followed by a HEMT placed at 70 K, and demonstrate a chain-added noise $T_\Sigma = 6.3\pm0.5$ K between 3.5 and 5.5 GHz.Abstract:
Most microwave readout architectures in quantum computing or sensing rely on a semiconductor amplifier at 4 K, typically a high-electron mobility transistor (HEMT). Despite its remarkable noise performance, a conventional HEMT dissipates several milliwatts of power, posing a practical challenge to scale up the number of qubits or sensors addressed in these architectures. As an alternative, we present an amplification chain consisting of a kinetic-inductance traveling-wave parametric amplifier (KI-TWPA) placed at 4 K, followed by a HEMT placed at 70 K, and demonstrate a chain-added noise $T_\Sigma = 6.3\pm0.5$ K between 3.5 and 5.5 GHz. While, in principle, any parametric amplifier can be quantum limited even at 4 K, in practice we find the KI-TWPA's performance limited by the temperature of its inputs, and by an excess of noise $T_\mathrm{ex} = 1.9$ K. The dissipation of the KI-TWPA's rf pump constitutes the main power load at 4 K and is about one percent that of a HEMT. These combined noise and power dissipation values pave the way for the KI-TWPA's use as a replacement for semiconductor amplifiers.read more
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Engineering the thin film characteristics for optimal performance of superconducting kinetic inductance amplifiers using a rigorous modelling technique
TL;DR: In this paper , the authors present a novel modeling technique that can better capture the electromagnetic behavior of a KITWPA without the translation symmetry assumption, allowing them to flexibly explore the use of more complex transmission line structures and better predict their performance.
Journal ArticleDOI
In situ amplification of spin echoes within a kinetic inductance parametric amplifier
Wyatt Vine,Mykhailo Savytskyi,A.A. Vaartjes,Anders Kringhøj,D. J. Parker,J Slack-Smith,Thomas Schenkel,Klaus Mølmer,Jeffrey C. McCallum,Brett C. Johnson,Andrea Morello,Jarryd J. Pla +11 more
TL;DR: In this paper , a superconducting microresonators together with quantum-limited Josephson parametric amplifiers has been used to enhance the sensitivity of pulsed electron spin resonance (ESR) measurements.
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Millimetre Wave Kinetic Inductance Parametric Amplification using Ridge Gap Waveguide
TL;DR: In this paper , a superconducting ridge-gap waveguide (RGWG) was designed using Ansys HFSS to support a quasi-TEM mode of transmission over a bandwidth of 20 to 120 GHz with its internal dimensions optimized for integration with W-band rectangular waveguide.
Posted Content
Millimetre Wave Kinetic Inductance Parametric Amplification using Ridge Gap Waveguide
TL;DR: In this article, a superconducting ridge-gap waveguide (RGWG) was designed using Ansys HFSS to support a quasi-TEM mode of transmission over a bandwidth of 20 to 120 GHz with its internal dimensions optimized for integration with W-band rectangular waveguide.
Posted Content
Quantum Dot-Based Parametric Amplifiers
Laurence Cochrane,Theodor Lundberg,David J. Ibberson,Lisa Ibberson,Louis Hutin,Benoit Bertrand,N. A. Stelmashenko,Jason W. A. Robinson,Maud Vinet,Ashwin A. Seshia,M. Fernando Gonzalez-Zalba +10 more
TL;DR: In this paper, the quantum capacitance arising in electronic two-level systems (the dual of Josephson inductance) can provide an alternative dissipation-less nonlinear element for parametric amplification.
References
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TL;DR: Quantum supremacy is demonstrated using a programmable superconducting processor known as Sycamore, taking approximately 200 seconds to sample one instance of a quantum circuit a million times, which would take a state-of-the-art supercomputer around ten thousand years to compute.
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Quantum limits on noise in linear amplifiers
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A near–quantum-limited Josephson traveling-wave parametric amplifier
C. Macklin,C. Macklin,Kevin O'Brien,David Hover,Mollie Schwartz,Vladimir Bolkhovsky,Xiang Zhang,Xiang Zhang,Xiang Zhang,William D. Oliver,Irfan Siddiqi +10 more
TL;DR: A superconducting amplifier based on a Josephson junction transmission line that exhibited high gain over a gigahertz-sized bandwidth and was able to perform high-fidelity qubit readout and has broad applicability to microwave metrology and quantum optics.
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Amplification and squeezing of quantum noise with a tunable Josephson metamaterial
TL;DR: An array of 488 Josephson junctions that amplifies and squeezes noise beyond conventional quantum limits is proposed in this article for superconducting qubits and other quantum devices.
Journal ArticleDOI
Superconducting Microresonators: Physics and Applications
TL;DR: A review of the development of superconducting micro-resonators can be found in this article, with particular attention given to the use of supercondensing micro-reonators as detectors.