期刊
PHYSICAL REVIEW LETTERS
卷 100, 期 2, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.100.026601
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We report the first measurement of the dynamical response of shot noise (measured at frequency omega) of a tunnel junction to an ac excitation at frequency omega(0). The experiment is performed in the quantum regime, h omega similar to h omega(0)>>k(B)T at very low temperature T=35 mK and high frequency omega(0)/2 pi=6.2 GHz. We observe that the noise responds in phase with the excitation, but not adiabatically. The results are in very good agreement with a prediction based on a new current-current correlator.
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