Service de Physique de l'Etat Condensé
It is important to note that in microelectronics, quantum mechanics only entered so far to explain material properties and did not play a role in the electrodynamics of circuits which always remained classical. What new phenomena arise when electron quantum coherence span a whole device and can influence its collective behavior? The aim of the research performed by the QUANTum physics and electrRONICS group is to answer experimentally this question. Using electron-beam lithography, low-temperature and ultra-low-noise techniques, we design, fabricate and measure metallic circuits in which quantum effects manifest themselves directly on macroscopic electrical quantities.