Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session W44: Electrons, Phonons, Electron Phonon Scattering, and Phononics VII
8:00 AM–10:48 AM,
Friday, March 6, 2020
Room: 704
Sponsoring
Units:
DCOMP DMP
Chair: Mu Wang, Nanjing University
Abstract: W44.00003 : Noise mediated mixing in a tunnel junction
Presenter:
Samuel Houle
(Université de Sherbrooke)
Authors:
Samuel Houle
(Université de Sherbrooke)
Edouard Pinsolle
(Université de Sherbrooke)
Joffrey Rivard
(Université de Sherbrooke)
Christian Lupien
(Université de Sherbrooke)
Bertrand M Reulet
(Université de Sherbrooke)
signals. It is based on a nonlinear element such as a semiconducting
diode or a Josephson junction, and allows for example the downconversion
of microwave signals to low frequency for digitization. In the quantum
regime, the mixing of vacuum fluctuations with an ac excitation leads to
the generation of squeezed microwaves.
A normal metal tunnel junction with a linear current-voltage cannot be
used to mix signals. It has however been shown to generate squeezed
vacuum thanks to another type of nonlinearity, that of noise vs. bias
voltage. We demonstrate the use of a tunnel junction as a noise mediated
mixer: the junction excited at two frequencies (around 20GHz) generates
a noise which amplitude is modulated at the difference frequency. We
compare our data with theoretical predictions of photon-assisted noise
and observe small deviations that seem to indicate an extra frequency
cutoff possibly reated to the thermalization time of electrons in the
electrodes.
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2025 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700