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