2008/07/31 by Stephan André, Valentina Brosco, Alexander Shnirman +1
Computer Science · Physics and Astronomy · #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum optics and atomic interactions #cond-mat.mes-hall
paper · pdf · doi:10.1103/physreva.79.053848
published as Phys. Rev. A 79, 053848 (2009) · Revised version with a new section about the validity of the model when applied to describe experiments
openalex publication_date 2009/05/26 · arxiv created 2009/08/26 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Motivated by recent experiments, which demonstrated lasing and cooling of the electromagnetic field in an electrical resonator coupled to a superconducting qubit, we study the phase coherence and diffusion of the system in the lasing state. We also discuss phase locking and synchronization induced by an additional ac driving of the resonator. We extend earlier work to account for the strong qubit-resonator coupling and to include the effects of low-frequency qubit's noise. We show that the strong coupling may lead to a double-peak structure of the spectrum, while the shape and width are determined to the low-frequency noise.