2015/02/23 by Zahra Amini Sabegh, Z. Amini Sabegh, A. Vafafard +9
Physics and Astronomy · #Atomic and Subatomic Physics Research #FOS: Physical sciences #Optics (physics.optics) #Quantum Physics (quant-ph) #Quantum and electron transport phenomena #Quantum optics and atomic interactions #physics.optics #quant-ph
paper · pdf · doi:10.48550/arxiv.1502.06350
18 pages,6 figures
arxiv created 2015/02/23 · openalex publication_date 2015/02/23 · arxiv updated 2015/02/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We study the propagation and amplification of a microwave field in a four-level cascade quantum system which is realized in a superconducting phase quantum circuit. It is shown that by increasing the microwave pump tones feeding the system, the normal dispersion switches to the anomalous and the gain-assisted superluminal microwave propagation is obtained in this system. Moreover, it is demonstrated that the stimulated microwave field is generated via four-wave mixing without any inversion population in the energy levels of the system (amplification without inversion) and the group velocity of the generated pulse can be controlled by the external oscillating magnetic fluxes. We also show that in some special set of parameters, the absorption-free superluminal generated microwave propagation is obtained in superconducting phase quantum circuit system.