2000 character limit reached
Electromagnetically-induced transparency with amplification in superconducting circuits (1004.1817v1)
Published 11 Apr 2010 in quant-ph and cond-mat.supr-con
Abstract: We show that electromagnetically-induced transparency and lasing without inversion are simultaneously achieved for microwave fields by using a fluxonium superconducting circuit. As a result of the $\Delta$ energy-level structure of this artificial three-level atom, we find the surprising phenomenon that the electromagnetically-induced transparency window in the frequency domain is sandwiched between absorption on one side and amplification on the other side.