Data for hybrid quantum memory leveraging slow-light and gradient-echo duality experiment

For this experiment we measured all of the data using heterodyne detection.File "fig2" contains the data for the expeiment performed by storing the light in the GEM and then reading it out with EIT and gaussian functions fitted to the collecte time traces.Files "fig3_a" and "fig3_c_sim" contains the parameters of the gaussian functions fitted to the experimental time traces and simulated time traces respectively.File "fig4" contains fourier transforms of the experimentally measured time traces for impulses stored in EIT and readout in GEM.File "fig5" contains time traces for impulse with two frequencies stored in GEM and readout in EIT with fitted gaussian functions and fourier transform of time traces for two impulse stored in EIT and readout in GEM with fitted gaussian functions.Files were generated with Xarray (v2025.3.1) Python library. Files are in the HDF5 format. Files can be loaded uisng Xarray function "xarray.load_dataset". We analyzed the data using Python programming language. Data for theoretical model were created using Python.The “Quantum Optical Technologies” (FENG.02.01-IP.05-0017/23) project is carried out within the Measure 2.1 International Research Agendas programme of the Foundation for Polish Science, co-financed by the European Union under the European Funds for Smart Economy 2021--2027 (FENG). This research was funded in whole or in part by the National Science Centre, Poland, grant no. 2024/53/B/ST2/04040. Publication co-financed from the state budget funds (Poland), awarded by the Minister of Science under the “Perły Nauki II” program, project No. PN/02/0027/2023, co-financing amount PLN 239,998.00, total project value PLN 239,998.00.