Parametric amplification by coupled flux qubits
arXiv:1312.7237 · doi:10.1063/1.4873719
Abstract
We report the parametric amplification of a microwave signal in a Kerr medium formed from superconducting qubits. Two mutually coupled flux qubits, embedded in the current antinode of a superconducting coplanar waveguide resonator, are used as a nonlinear element. Shared Josephson junctions provide the qubit-resonator coupling, resulting in a device with a measured gain of about 20 dB. We argue, that this arrangement represents a unit cell which can be straightforwardly extended to a quasi one-dimensional quantum metamaterial with a large tunable Kerr nonlinearity.
4 pages, 4 figures
References in corpus (13)
- Amplification and squeezing of quantum noise with a tunable Josephson metamaterial
- A widely tunable parametric amplifier based on a SQUID array resonator
- Nonlinearities and Parametric Amplification in Superconducting Coplanar Waveguide Resonators
- Modulation instability in nonlinear metamaterials induced by cubic-quintic nonlinearities and higher order dispersive effects
- Generation of squeezed states of microwave radiation in a superconducting resonant circuit
- Four-qubit device with mixed couplings
- Direct Josephson coupling between superconducting flux qubits
- Possible implementation of adiabatic quantum algorithm with superconducting flux qubits
- Resonant excitations of single and two-qubit systems coupled to a tank circuit
- Quantum behaviour of a flux qubit coupled to a resonator
- Flux qubit as a sensor for a magnetometer with quantum limited sensitivity
- Phase sensitive amplification in a superconducting stripline resonator integrated with a dc-SQUID
- Wave-packet rectification in nonlinear electronic systems: A tunable Aharonov-Bohm diode
Cited by in corpus (12)
- Bifurcation-based adiabatic quantum computation with a nonlinear oscillator network: Toward quantum soft computing
- Universal quantum computation with a nonlinear oscillator network
- Quantum Computation Based on Quantum Adiabatic Bifurcations of Kerr-Nonlinear Parametric Oscillators
- Dissipative quantum bifurcation machine: Quantum heating of coupled nonlinear oscillators
- Josephson Metamaterial with a widely tunable positive/negative Kerr constant
- Non-Markovian dynamics of a superconducting qubit in an open multimode resonator
- Two-photon lasing by a superconducting qubit
- Symmetries of the squeeze-driven Kerr oscillator
- Normal modes of a superconducting transmission-line resonator with embedded lumped element circuit components
- Broadband Sample Holder for Microwave Spectroscopy of Superconducting Qubits
- Superharmonic Resonances in a Strongly Coupled Cavity-Atom System
- Mollow triplet: pump probe single photon spectroscopy of artificial atoms