I was awarded with an ESG Nanoprize 2018 by the Erwin Schrödinger Society for the paper “Optically driven ultra-stable nanomechanical rotor”, published in Nature Communications. The prize will be awarded at the 3rd ESG Symposium on July 4th in Dornbirn, Austria.
We had many curious visitors during the Long Night of Research 2018 at the University of Vienna who were eager to see optically levitated microparticles and engage in sparking discussions about quantum physics. Special thanks to The Quantum Workshop and James Millen for lending us their outreach experiment as well as David Grass for his support.
Our collaborators in Duisburg have proposed a quantum experiment in which the interference of the superposed orientations of a freely falling nanorotor leads to revivals of the particle’s initial alignment. Realising this experiment will enable quantum enhanced torque sensing and tests of objective collapse models in the rotational degrees of freedom.
B. A. Stickler, B. Papendell, S. Kuhn, J. Millen, M. Arndt, and K. Hornberger, Orientational quantum revivals of nanoscale rotors, arXiv:1803.01778v1
Today I have completed my defensio and my PhD studies with distinction. Soon I will return to the lab and start working on my new project ROTOQUOP.
Together with our collaboration partners from the Technical University of Vienna we have realised open-access silicon microcavities. Their low mode-volume has allowed us to detect 300 nm silica nanoparticles via their strong coupling to the cavity field. This work has been published as an Editor’s pick in Applied Physics Letters:
S. Kuhn, G. Wachter, F.-F. Wieser, J. Millen, M. Schneider, J. Schalko, U. Schmid, M. Trupke, and M. Arndt, Nanoparticle detection in an open-access silicon microcavity, Applied Physics Letters 111, 253107 (2017).
We have realised ultra-stable rotations of a silicon nanorod by locking its motion to an electronic clock. This work has been published in Nature Communications:
S. Kuhn, B. A. Stickler, A. Kosloff, F. Patolsky, K. Hornberger, M. Arndt, J. Millen, Optically driven ultra-stable nanomechanical rotor, Nat. Commun. 8, 1670 (2017)
Our findings have also been picked up by several news-outlets, e.g. by the Austrian newspaper Der Standard: “Physiker konstruieren hochpräzise Uhr mit schwebenden Nano-Zeigern” and phys.org: Nano-watch has steady hands.
The Erwin Schrödinger Center for Quantum Science & Technology (Austrian Academy of Science) has granted me the project Rotational Quantum Optomechanics (ROTOQUOP) to study the rotational cooling of silicon nanorods. I will be working on ROTOQUOP for 12 months starting from February 1st.