Emission and Absorption Asymmetry in the Quantum Noise of a Josephson Junction
Emission and Absorption Asymmetry in the Quantum Noise of a Josephson Junction
We measure current fluctuations of mesoscopic devices in the quantum regime, when the frequency is of the order of or higher than the applied voltage or temperature. Detection is designed to probe separately the absorption and emission contributions of current fluctuations, i.e. the positive and negative frequencies of the Fourier …