Extended Data Fig. 9: Correlations in a heated sample.
From: Observation of Cooper pairs in a mesoscopic two-dimensional Fermi gas
We increase the energy of the sample by modulating the radial confinement with a pulse of 50 ms duration that is a square pulse of width 700 Hz in frequency space and with variable amplitude A (inset). We find that the pair correlations reduce with increasing energy of the sample until they vanish completely. This measurement was taken at intermediate binding energies of EB/ħωr = 0.6. In the future, we plan to study above-ground-state physics of our mesoscopic Fermi gas in more detail. To this end, we have to develop a precise method to measure temperatures of the sample. The error bars are obtained from the counts in each bin of the correlation function and by assuming Poissonian statistics.
