Details
| Original language | English |
|---|---|
| Article number | 193306 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 83 |
| Issue number | 19 |
| Publication status | Published - 26 May 2011 |
Abstract
We study a mesoscopic circuit of two quantized current sources, realized by nonadiabatic single-electron pumps connected in series with a small micron-sized island in between. We find that quantum transport through the second pump can be locked onto the quantized current of the first one by a feedback due to charging of the mesoscopic island. This is confirmed by a measurement of the charge variation on the island using a nearby charge detector. Finally, the charge feedback signal clearly evidences loading into excited states of the dynamic quantum dot during single-electron pump operation.
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Physical Review B - Condensed Matter and Materials Physics, Vol. 83, No. 19, 193306, 26.05.2011.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Quantized current source with mesoscopic feedback
AU - Fricke, Lukas
AU - Hohls, Frank
AU - Ubbelohde, Niels
AU - Kaestner, Bernd
AU - Kashcheyevs, Vyacheslavs
AU - Leicht, Christoph
AU - Mirovsky, Philipp
AU - Pierz, Klaus
AU - Schumacher, Hans W.
AU - Haug, Rolf J.
PY - 2011/5/26
Y1 - 2011/5/26
N2 - We study a mesoscopic circuit of two quantized current sources, realized by nonadiabatic single-electron pumps connected in series with a small micron-sized island in between. We find that quantum transport through the second pump can be locked onto the quantized current of the first one by a feedback due to charging of the mesoscopic island. This is confirmed by a measurement of the charge variation on the island using a nearby charge detector. Finally, the charge feedback signal clearly evidences loading into excited states of the dynamic quantum dot during single-electron pump operation.
AB - We study a mesoscopic circuit of two quantized current sources, realized by nonadiabatic single-electron pumps connected in series with a small micron-sized island in between. We find that quantum transport through the second pump can be locked onto the quantized current of the first one by a feedback due to charging of the mesoscopic island. This is confirmed by a measurement of the charge variation on the island using a nearby charge detector. Finally, the charge feedback signal clearly evidences loading into excited states of the dynamic quantum dot during single-electron pump operation.
UR - http://www.scopus.com/inward/record.url?scp=79961101951&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.83.193306
DO - 10.1103/PhysRevB.83.193306
M3 - Article
AN - SCOPUS:79961101951
VL - 83
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 1098-0121
IS - 19
M1 - 193306
ER -