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Microwave Quantum Optics

Edited by: Gerard Milburn, Per Delsing, Tom Stace and Tim Duty

Advances in superconducting quantum circuits and microwave resonators now enable quantum optical experiments to be carried out at microwave frequencies. The ability to engineer very large dipole interactions enables one to achieve coupling regimes that are difficult if not impossible to achieve in atomic systems. The rapid modulation of microwave resonator SQUID devices enables strong parametric driving to be achieved giving access to very strong squeezing, and the ability to engineer arbitrary few-photon superposition states developed for quantum computing applications provides a powerful new resource in the microwave domain.

  1. Research

    Quantum and classical nonlinear dynamics in a microwave cavity

    We consider a quarter wave coplanar microwave cavity terminated to ground via asuperconducting quantum interference device. By modulating the flux through the loop,the cavity frequency is modulated. The flux i...

    Charles H Meaney, Hyunchul Nha, Timothy Duty and Gerard J Milburn

    EPJ Quantum Technology 2014 1:7

    Published on: 10 June 2014

  2. Research

    Gain, noise and intermodulation in a nonlinear superconducting resonator

    A superconducting microwave resonator is modified with several weak links to make it nonlinear and operated as a phase-insensitive microwave amplifier. Signal gain is demonstrated by intermodulation with a str...

    Erik A Tholén, Adem Ergül, David Schaeffer and David B Haviland

    EPJ Quantum Technology 2014 1:5

    Published on: 7 March 2014

  3. Research

    The circuit quantum electrodynamical Josephson interferometer

    Arrays of circuit cavities offer fascinating perspectives for exploring quantum many-body systems in a driven dissipative regime where excitation losses are continuously compensated by coherent input drives. H...

    Robert Jirschik and Michael J Hartmann

    EPJ Quantum Technology 2014 1:4

    Published on: 29 January 2014

  4. Research

    Controlling the dynamic range of a Josephson parametric amplifier

    One of the central challenges in the development of parametric amplifiers is the control of the dynamic range relative to its gain and bandwidth, which typically limits quantum limited amplification to signals...

    Christopher Eichler and Andreas Wallraff

    EPJ Quantum Technology 2014 1:2

    Published on: 29 January 2014