Print Email Facebook Twitter Josephson Parametric Reflection Amplifier with Integrated Directionality Title Josephson Parametric Reflection Amplifier with Integrated Directionality Author Westig, M.P. (TU Delft QN/Klapwijk Lab; Kavli institute of nanoscience Delft) Klapwijk, T.M. (TU Delft QN/Klapwijk Lab; Kavli institute of nanoscience Delft) Date 2018 Abstract A directional superconducting parametric amplifier in the GHz frequency range is designed and analyzed, suitable for low-power read-out of microwave kinetic inductance detectors employed in astrophysics and when combined with a nonreciprocal device at its input also for circuit quantum electrodynamics. It consists of a one-wavelength-long nondegenerate Josephson parametric reflection amplifier circuit. The device has two Josephson-junction oscillators, connected via a tailored impedance to an on-chip passive circuit which directs the in- to the output port. The amplifier provides a gain of 20 dB over a bandwidth of 220 MHz on the signal as well as on the idler portion of the amplified input and the total photon shot noise referred to the input corresponds to maximally approximately 1.3 photons per second per Hertz of bandwidth. We predict a factor of 4 increase in dynamic range compared to conventional Josephson parametric amplifiers. To reference this document use: http://resolver.tudelft.nl/uuid:d7e384d5-c8df-4b72-9ffc-e58fa87bda5f DOI https://doi.org/10.1103/PhysRevApplied.9.064010 ISSN 2331-7019 Source Physical Review Applied, 9 (6) Part of collection Institutional Repository Document type journal article Rights © 2018 M.P. Westig, T.M. Klapwijk Files PDF PhysRevApplied.9.064010.pdf 915.21 KB Close viewer /islandora/object/uuid:d7e384d5-c8df-4b72-9ffc-e58fa87bda5f/datastream/OBJ/view