| Issue |
Europhys. Lett.
Volume 34, Number 5, May II 1996
|
|
|---|---|---|
| Page(s) | 385 - 390 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1996-00468-4 | |
| Published online | 01 September 2002 | |
Single Cooper-pair tunnelling induced by non-classical microwaves
1
Department of Applied Physics, Delft University of Technology, 2628 CJ Delft, The
Netherlands
and Nuclear Physics Institute, Moscow State University, Moscow 119899 GSP, Russia
2
Department of Electrical Engineering and Electronics, The University of
Liverpool, Brownlow Hill, PO Box 147, Liverpool L69 3BX, England
Received:
8
January
1996
Accepted:
21
March
1996
A mesoscopic Josephson junction
interacting with a mode of non-classical microwaves
with frequency ω is considered.
Squeezing of the electromagnetic field
drastically affects the dynamics of Cooper tunnelling.
In particular, Bloch steps
can be observed even when the microwaves are
in the squeezed vacuum state
with zero average amplitude of the field
. The interval between these
steps is double in size in comparison to the conventional
Bloch steps.
PACS: 73.40.Gk – Tunneling / 74.50.+r – Proximity effects, weak links, tunnelling phenomena, and Josephson effects / 42.50.Dv – Nonclassical field states; squeezed, antibunched, and sub-Poissonian states; operational definitions of the phase of the field; phase measurements
© EDP Sciences, 1996
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.