Josephson traveling-wave parametric amplifier with three-wave mixing
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TLDR
The traveling-wave Josephson parametric amplifier as discussed by the authors exploits quadratic nonlinearity of a serial array of one-junction SQUIDs embedded in a superconducting transmission line.Abstract:
We develop a concept of the traveling-wave Josephson parametric amplifier exploiting quadratic nonlinearity of a serial array of one-junction SQUIDs embedded in a superconducting transmission line. The external magnetic flux applied to the SQUIDs makes it possible to efficiently control the shape of their current-phase relation and, hence, the balance between quadratic and cubic (Kerr-like) nonlinearities. This property allows us to operate in the favorable three-wave-mixing mode with minimal phase mismatch, an exponential dependence of the power gain on number of sections $N$, a large bandwidth, a high dynamic range, and substantially separated signal ($f_s$) and pump ($f_p$) frequencies obeying relation $f_s+f_i = f_p$, where $f_i$ is the idler frequency. An estimation of the amplifier characteristics with typical experimental parameters, a pump frequency of $12$ GHz, and $N = 300$ yields a flat gain of 20 dB in the bandwidth of 5.6 GHz.read more
Citations
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Superconducting Parametric Amplifiers: The State of the Art in Josephson Parametric Amplifiers
TL;DR: In this paper, the authors give an overview of parametric amplifiers, how they work, and where there are opportunities for improvement in parametric amplification for superconducting quantum computing.
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Squeezing and quantum state engineering with Josephson travelling wave amplifiers
TL;DR: In this article, a quantum theory describing the input-output properties of Josephson traveling wave parametric amplifiers is presented. And the authors show how such a device can be used as a source of nonclassical radiation, and how dispersion engineering can be employed to tailor gain profiles and squeezing spectra with attractive properties, ranging from genuinely broadband spectra to squeezing combs.
Journal ArticleDOI
Kerr-Free Three-Wave Mixing in Superconducting Quantum Circuits
TL;DR: In this paper, an innovative circuit element with a Stark-shift-free sweet spot in parameter space was used to boost the power handling of a quantum-limited Josephson parametric amplifier by an order of magnitude.
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A photonic crystal Josephson traveling wave parametric amplifier
Luca Planat,A. Ranadive,Remy Dassonneville,Javier Puertas Martinez,Sebastien Leger,Cécile Naud,Olivier Buisson,Wiebke Hasch-Guichard,Denis M. Basko,Nicolas Roch +9 more
TL;DR: In this paper, a Traveling Wave Parametric Amplifier based on Superconducting QUantum Interference Devices (SQI) is proposed. But it is not suitable for high-frequency measurements.
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Simplified Josephson-junction fabrication process for reproducibly high-performance superconducting qubits
A. Osman,J. Simon,Andreas Bengtsson,Sandoko Kosen,Philip Krantz,D. Perez,Marco Scigliuzzo,Jonas Bylander,A. Fadavi Roudsari +8 more
TL;DR: In this paper, a patch-integrated cross-type junction technique was proposed to eliminate parasitic junctions, which contribute significantly to dielectric loss, which is a requirement for scaling-up the number of qubits in a quantum computer.
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