Abstract

Based on gain assisted electromagnetically induced transparency (EIT), we propose a scheme for coherent manipulation and storage of a microwave pulse propagating through a linear array of superconducting artificial atoms (SAAs). In an EIT-based system, the signal operates in an absorption mode, and its attenuation cannot be avoided during propagation. This results in low transmissivity of the medium. We show that based on gain assisted EIT, the attenuation can be ameliorated, and a probe pulse can be amplified while it propagates through the medium with significant reduction in its group velocity. The linear array of SAAs can thus act as a gain assisted EIT-based coherent microwave memory scheme with high fidelity.

© 2020 Optical Society of America

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