Symmetric Traveling Wave Parametric Amplifier

Symmetric Traveling Wave Parametric Amplifier

We developed and experimentally tested a symmetric traveling wave parametric amplifier (STWPA) based on three-wave mixing, using the new concept of a symmetric rf-SQUID. This allowed us to fully control the second and third order nonlinearities of the STWPA by applying external currents. In this way...

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Veröffentlicht in:IEEE transactions on applied superconductivity 2019-08, Vol.29 (5), p.1-6
Hauptverfasser: Miano, Alessandro, Mukhanov, Oleg A.
Format: Artikel
Sprache:eng
Schlagworte:
Bandwidth
Depletion
Dispersion
Inductance
Integrated circuits
Josephson junctions
Junctions
microwave amplifiers
microwave photonics
Optimization
Parametric amplifiers
Propagation
Quantum computing
SQUIDs
superconducting integrated circuits
superconducting microwave devices
Three-wave mixing
Traveling waves
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Beschreibung
Zusammenfassung:We developed and experimentally tested a symmetric traveling wave parametric amplifier (STWPA) based on three-wave mixing, using the new concept of a symmetric rf-SQUID. This allowed us to fully control the second and third order nonlinearities of the STWPA by applying external currents. In this way, the optimal bias point can be reached, taking into account both phase mismatch and pump depletion minimization. The structure was tested at 4.2 K, showing a 4 GHz bandwidth and a maximum estimated gain of 17 dB.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2019.2904699