T. A. Wright, Charlotte Parry, Oliver R. Gibson, Robert J.A. Francis Jones, and Peter J. Mosley (2020) 	
Dataset for “Resource-efficient frequency conversion for quantum networks via a sequential four-wave mixing scheme”

A preprint of the manuscript is available at https://arxiv.org/abs/2005.11227. This dataset contains all of the experimental data presented.

Please direct enquiries to: 
t.wright@bath.ac.uk

All data was collected between October 2018 and October 2019 at the University of Bath, Bath, United Kingdom. 

 == Measurements of Seeded Four-Wave Mixing ==

The results of the seeded four-wave mixing (FWM) measurements were plotted in Fig.3. All the corresponding data is contained within fig3_Seeded_FWM:

- plot_fig3.m - This is the Matlab script used to produce Fig.3 using the data contained within the folder fig3_Seeded_FWM. 

- nosa_read.m - This is a Matlab function used by plot_fig3.m. It is used to extract data from the csv files  containing FWM spectra. 

- There are 24 csv files, named in the form W0XXX.CSV. These contain the seeded and spontaneous FWM spectra presented in Fig.3(a), which were recorded on an Optical Spectrum Analyser (OSA,  Yokogawa AQ6374). 

- There are 115 .dat files, named in the form C3Trace00XXX.dat. These are traces from a digital oscilloscope (Teledyne Lecroy, WaveSurfer), used to evaluate the distributions of pulse energy in FWM idler pulses. 

== Measurements of  Bragg-Scattering Four-Wave Mixing ==

The results related to the Bragg-Scattering FWM (BS-FWM) measurements are plotted in Fig.4. The data for up- and down-conversion are divided into subfolders contained within the  folder fig4_BS_FWM. Within the folder fig4_BS_FWM, is:

- plot_fig4.m - this is a script used to sequentially call the individual plotting scripts used for each subplot of Fig.4. 

— Measurements of Down-Conversion Efficiency — 

These files are contained within the folder Fig4_BS_FWM/Down_Conversion. 

- plot_fig.4c - This Matlab script integrates the power spectra contained within the same folder to calculate the pump-power-dependant down-conversion efficiency. 

- There are 24 csv files, named in the form A0XXX.CSV. These contain BS-FWM spectra presented in Fig.4(c), which were recorded on an Optical Spectrum Analyser (OSA,  Yokogawa AQ6374). 

— BS-FWM Up-Conversion Spectra — 

These files are contained within the folder Fig4_BS_FWM/Up_Conversion/spectra . 

- A0001.CSV contains the BS-FWM spectra presented in Fig.4(a), which was recorded on an Optical Spectrum Analyser (OSA,  Yokogawa AQ6374).

- plot_fig4a.m - This is a Matlab script used to plot Fig.4(a). 

— BS-FWM Up-Conversion Phase Matching  — 

These files are contained within the folder Fig4_BS_FWM/Up_Conversion/efficiency/ . 

- plot_fig4a_inset.m - This is a Matlab script used to plot the phase-matching (wavelength-dependant conversion efficiency) inset within Fig.4(a). 

- wl - this is a folder containing 26 CSV files named in the form A0XXX.CSV. These contain the BS-FWM spectra used to calculate the phase-matching contour inset within Fig.4(a). These files were recorded on an Optical Spectrum Analyser (OSA,  Yokogawa AQ6374). 

— BS-FWM Up-Conversion Efficiency  — 

These files are contained within the folder Fig4_BS_FWM/Up_Conversion/efficiency/ . 

- plot_fig4b.m - This is a Matlab script used to plot the up-conversion efficiency in Fig.4(b). 

- pwr - this is a folder containing 13 CSV files named in the form A0XXX.CSV. These contain the BS-FWM spectra used to calculate the pump-power dependant conversion efficiency presented within Fig.4(b). These files were recorded on an Optical Spectrum Analyser (OSA,  Yokogawa AQ6374).