Description
Delta-sigma algorithms are used to determine the desired sequence of quantum-based voltage pulses used by the Josephson Arbitrary Waveform Synthesizer (JAWS) to create calculable voltage waveforms. This data set contains a comparison (Fig 1. of the CPEM 2024 abstract) of a 1 kHz pulse pattern with rms amplitude of 2 mV without post-processing and with post-processing which modifies the problematic pulse pattern to remove incorrect pulses at the 0.75 ms pattern wrap point. In the time-domain, the pulse patterns are low-pass filtered at 30 MHz and the residuals relative to the 1 kHz ac signal are also shown. This data set also contains spectra which show the pulse patterns' voltage relative to the fundamental in the frequency domain.
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| PostProcComparison_ver3_bottom.txt | Unknown | Data used in the bottom plot of Figure 1 of [1]. Versus frequency (column 1, Hz), we plot the FFT of the same pulse patterns as a voltage relative to the fundamental for the pattern generated without post-processing (red curve, column 2, dBc) and with post-processing (green curve, column 3, dBc). | Open resource |
| PostProcComparison_ver3_topmiddle | Unknown | Data used in the top and middle plots of Figure 1 of [1]. Versus time (column 1, seconds), we plot a 1 kHz pulse pattern with rms amplitude of 2 mV that is low-pass filtered at 30 MHz and generated without post-processing (red curve, column 2, V) with residuals relative to the 1 kHz ac signal (top black curve, column 3, V), and after post-processing which modifies the problematic pulse pattern to remove incorrect pulses at the 0.75~ms pattern wrap point (green curve, column 4, V) with residuals (middle black curve, column 5, V). | Open resource |
| README.txt | Text | A README file describing the data set. | Open resource |