Observation of quantum oscillations in the photoassisted shot noise of a tunnel junction
Observation of quantum oscillations in the photoassisted shot noise of a tunnel junction
We report measurements of the low frequency current fluctuations of a tunnel junction placed at very low temperature biased by a time-dependent voltage $V(t)=V(1+\cos 2\pi\nu t)$. We observe that the excess noise generated by the ac excitation exhibits quantum oscillations as a function of the dc bias, with a period …