2012/03/12 by Stephan André, Lingzhen Guo, Vittorio Peano +2
Physics and Astronomy · #Advanced Fiber Laser Technologies #Mechanical and Optical Resonators #Quantum optics and atomic interactions #cond-mat.mes-hall #quant-ph
paper · pdf · doi:10.1103/physreva.85.053825
published as Phys. Rev. A 85, 053825 (2012) · 8 pages, 5 figures
arxiv created 2012/03/12 · openalex publication_date 2012/05/22 · arxiv updated 2012/05/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Motivated by recent ``circuit QED'' experiments we investigate the noise properties of coherently driven nonlinear resonators. By using Josephson junctions in superconducting circuits, strong nonlinearities can be engineered, which lead to the appearance of pronounced effects already for a low number of photons in the resonator. Based on a master equation approach we determine the emission spectrum and observe for typical circuit QED parameters, in addition to the primary Raman-type peaks, second-order peaks. These peaks describe higher harmonics in the slow noise-induced fluctuations of the oscillation amplitude of the resonator and provide a clear signature of the nonlinear nature of the system.