Atomic spin-controlled non-reciprocal Raman amplification of fibre-guided light

This repository contains the data used in an experiment that demonstrates atomic spin-controlled non-reciprocal Raman amplification of fibre-guided light. For more information, see the following publication:

• 10.1038/s41566-022-00987-z
• 10.48550/arXiv.2107.07272

We provide the data in text files encoded in the Unicode standard UTF-8. In the following, we describe the files in more detail.

The measured evolution of the signal transmission presented in Fig. 2b is provided in the file “source_data_fig2b.txt”. The file has five columns that are separated by the delimiter “, ”:

• the time in microseconds,
• the signal transmission in the 1→2 direction,
• the error of the signal transmission in the 1→2 direction,
• the signal transmission in the 1→2 direction,
• and the error of the signal transmission in the 1→2 direction.

We provide the theory data in the additional file “theory_fig2b.txt”. It contains three columns that are separated by the delimiter “, ” :

• the time in microseconds,
• the calculated signal transmission in the 1→2 direction,
• the calculated signal transmission in the 2→1 direction.

In the files “source_data_fig2c.txt”, “source_data_fig2d.txt”, and “source_data_fig3b.txt”, we provide the data of the bar plots in Fig. 2c, 2d, and 3b, respectively. In every file, the first column indicates the measurement direction. The following columns contain the detected mean signal transmission with the corresponding errors for various initial atomic spin states defined by the magnetic quantum number m_F.