Eva Zakka-Bajjani, J. Dufouleur, N. Coulombel, P. Roche, D. C. Glattli, and F. Portier
( French version)
Contact: Dr. Fabien PORTIER
A conductor in equilibrium under a bias voltage shows current fluctuations proportional to its resistance and temperature. This type of noise is known as the Johnson-Nyquist noise, or equivalently, the thermal noise. In a quantum conductor, current fluctuations generate microwave photons which obey chaotic statistics (cf., blackbody radiation) if the conductor is at equilibrium.