High-gain weakly nonlinear flux-modulated Josephson parametric amplifier using a SQUID-array

Abstract

We have developed and measured a high-gain quantum-limited microwave parametric amplifier based on a superconducting lumped LC resonator with the inductor L including an array of 8 superconducting quantum interference devices (SQUIDs). This amplifier is parametrically pumped by modulating the flux threading the SQUIDs at twice the resonator frequency. Around 5 GHz, a maximum gain of 31 dB, a product amplitude-gain x bandwidth above 60 MHz, and a 1 dB compression point of -123 dBm at 20 dB gain are obtained in the non-degenerate mode of operation. Phase sensitive amplification-deamplification is also measured in the degenerate mode and yields a maximum gain of 37 dB. The compression point obtained is 18 dB above what would be obtained with a single SQUID of the same inductance, due to the smaller nonlinearity of the SQUID array.

7 pages, 4 figures, 23 references

References in corpus (6)

• Sideband Cooling Micromechanical Motion to the Quantum Ground State
• Quantum feedback control of a superconducting qubit: Persistent Rabi oscillations
• A widely tunable parametric amplifier based on a SQUID array resonator
• Path Entanglement of Continuous-Variable Quantum Microwaves
• Photon generation in an electromagnetic cavity with a time-dependent boundary
• Wireless Josephson Amplifier

Cited by in corpus (11)

• Microwave photonics with superconducting quantum circuits
• Kerr-free three-wave mixing in superconducting quantum circuits
• Inductive-detection electron-spin resonance spectroscopy with $65$spins$/\sqrt{\text{Hz}}$ sensitivity
• Effect of higher-order nonlinearities on amplification and squeezing in Josephson parametric amplifiers
• Storing quantum information in spins and high-sensitivity ESR
• Proposal for detection of a single electron spin in a microwave resonator
• Broadband lumped-element Josephson parametric amplifier with single-step lithography
• A compact design for the Josephson mixer: the lumped element circuit
• Manipulating Fock states of a harmonic oscillator while preserving its linearity
• Relaxation of an ensemble of two-level emitters in a squeezed bath
• Large gain quantum-limited qubit measurement using a two-mode nonlinear cavity