Kerr reversal in Josephson meta-material and traveling wave parametric amplification datasets

This repository contains raw data for results presented in article "Kerr reversal in Josephson meta-material and traveling wave parametric amplification" (Preprint : arXiv:2101.05815). All data is stored in numpy(numpy.org) array format.

Please site any usage to original publication.

# Gain data

    The data used for generating Fig. 3(a) of main text:

        -    Gain_6_freq contains frequency axis, gain_6 contains corresponding gain data when     the device is pumped at 6 GHz

        -    Gain_8_freq contains frequency axis, gain_8 contains corresponding gain data when     the device is pumped at 8 GHz

        -    Gain_10_freq contains frequency axis, gain_10 contains corresponding gain data when the device is pumped at 10 GHz

# Saturation data

    The data used for generating Fig. 3(d) of main text:

        -    saturation_6_pow contains input signal power at 6.05 GHz and saturation_6_gain contains gain as a function of the same when device is pumped at 8 GHz.

        -    saturation_9.5_pow contains input signal power at 9.5 GHz and saturation_9.5_gain contains gain as a function of the same when device is pumped at 8 GHz.

# Noise data

    The raw data used for fitting noise performance of the TWPA as depicted in Fig. 4 of main text:

        -    noise_without_TWPA_temperature : contains noise temperature of the amplification chain without TWPA, in
        Kelvin.
        -    noise_without_TWPA_sys_gain_dB : contains gain of the amplification chain without TWPA, in dB.

        -    noise_freq : contains frequency axis for the measured PSD.

        -    noise_thermal_source_temperature : contains temperature data of the thermal noise source.

        -    noise_with_TWPA_PSD_vs_thermal_source_temperature : contains PSD measured with 200 MHz RBW as a function
        of frequency and temperature of thermal noise source.

# Transmission data

    Normalized transmission through the device.

        -    transmission_flux : contains quantized flux axis for the measured transmission.

        -    transmission_freq : contains frequency axis for the measured transmission.

        -    transmission : contains transmission as a function of frequency and quantized flux, in dB.

# Dispersion data

    Dispersion through the device.

        -    dispersion_freq : contains frequency axis for the measured dispersion.

        -    dispersion_phase_PCB : contains phase accumulation when RF switch is in PCB position as a function of
        frequency, in radians.
        -    dispersion_flux_mA : contains flux axis for the measured dispersion, in mA.

        -    dispersion_phase_device : contains phase accumulation when RF switch is in device position as a function
        of frequency and flux, in radians.