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Optically driven ultra-stable nanomechanical rotor

Autor(en)
Stefan Kuhn, Benjamin A. Stickler, Alon Kosloff, Fernando Patolsky, Klaus Hornberger, Markus Arndt, James Millen
Abstrakt

Nanomechanical devices have attracted the interest of a growing interdisciplinary research community, since they can be used as highly sensitive transducers for various physical quantities. Exquisite control over these systems facilitates experiments on the foundations of physics. Here, we demonstrate that an optically trapped silicon nanorod, set into rotation at MHz frequencies, can be locked to an external clock, transducing the properties of the time standard to the rod's motion with a remarkable frequency stability f

r/Δf

r of 7.7 × 10

11. While the dynamics of this periodically driven rotor generally can be chaotic, we derive and verify that stable limit cycles exist over a surprisingly wide parameter range. This robustness should enable, in principle, measurements of external torques with sensitivities better than 0.25 zNm, even at room temperature. We show that in a dilute gas, real-time phase measurements on the locked nanorod transduce pressure values with a sensitivity of 0.3%.

Organisation(en)
Quantenoptik, Quantennanophysik und Quanteninformation
Externe Organisation(en)
Universitätsklinik Duisburg-Essen, Tel Aviv University, Vienna Center for Quantum Science and Technology (VCQ)
Journal
Nature Communications
Band
8
Anzahl der Seiten
5
ISSN
2041-1723
DOI
https://doi.org/10.1038/s41467-017-01902-9
Publikationsdatum
11-2017
Peer-reviewed
Ja
ÖFOS 2012
103025 Quantenmechanik, 103015 Kondensierte Materie, 103021 Optik
Schlagwörter
ASJC Scopus Sachgebiete
General, Allgemeine Physik und Astronomie, Allgemeine Chemie, Allgemeine Biochemie, Genetik und Molekularbiologie
Link zum Portal
https://ucrisportal.univie.ac.at/de/publications/7e18bf2e-5587-4cac-b168-50a5933a5092