Turtur, Prof. Dr.rer.nat.

Quantum noise

Noise contains energy. How, for example, the thermal noise of a pn-transition can be used, is part the knowledge of every electrical engineer.
If the zero-point waves in the vacuum correspond to some noise, then this would occur even at the absolute zero temperature (0 Kelvin), where there is no thermal noise anymore. A search of such Quantum-noise was in Josephson-junctions was performed. Two links can be found here:: [Koch, 1980] and [Koch, 1982].
Meanwhile, there are even some theoretical considerations according to which the quantum noise can be evaluated in a way that it should be possible to decide, whether the zero-point oscillations of Quantum Theory have an upper frequency limit (a cut-off frequence) or not. Also to this work, here is a link.