This may be a very trivial question but I am a theoretician and can't find the answer to this question for the life of me. Is it possible to actually measure the Josephson supercurrent flowing through a Josephson junction in a lab? Specifically, can we actually get data that can help us plot the current value as it changes with time (or Fourier transform of it)? Can we see the supercurrent $$I(t) = I_c \sin{\phi(t)}$$ in the lab? $I_c$ is the critical current. Any references are much appreciated. Thank you.
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