Lumped-element Josephson parametric amplifier at 650 MHz for nano-calorimeter readout
Sign Up to like & getrecommendations! Published in 2017 at "Superconductor Science and Technology"
DOI: 10.1088/1361-6668/aa73ed
Abstract: We design a sub-gigahertz Josephson parametric amplifier for the readout of nanoscale calorimeters which consist of normal-metal–superconductor heterostructures. We characterize the amplifier performance at two operating points, 605 and 655 MHz, corresponding to reproducible local… read more here.
Keywords: element josephson; josephson parametric; parametric amplifier; lumped element ... See more keywords
Optimizing Josephson-ring-modulator-based Josephson parametric amplifiers via full Hamiltonian control
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review A"
DOI: 10.1103/physreva.101.042323
Abstract: Josephson parametric amplifiers (JPA) are nonlinear devices that are used for quantum sensing and qubit readout in the microwave regime. While JPAs regularly operate near the quantum limit, their gain saturates for very small (few-photon)… read more here.
Keywords: parametric amplifiers; josephson ring; jpas; ring modulator ... See more keywords
Understanding the Saturation Power of Josephson Parametric Amplifiers Made from SQUID Arrays
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review Applied"
DOI: 10.1103/physrevapplied.11.034014
Abstract: We report on the implementation and detailed modelling of a Josephson Parametric Amplifier (JPA) made from an array of eighty Superconducting QUantum Interference Devices (SQUIDs), forming a non-linear quarter-wave resonator. This device was fabricated using… read more here.
Keywords: understanding saturation; josephson parametric; saturation power; saturation ... See more keywords
Josephson Parametric Reflection Amplifier with Integrated Directionality
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review Applied"
DOI: 10.1103/physrevapplied.9.064010
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… read more here.
Keywords: amplifier integrated; josephson parametric; josephson; parametric reflection ... See more keywords