4.8 Article

Nanoscale real-time detection of quantum vortices at millikelvin temperatures

Journal

NATURE COMMUNICATIONS
Volume 12, Issue 1, Pages -

Publisher

NATURE RESEARCH
DOI: 10.1038/s41467-021-22909-3

Keywords

-

Funding

  1. UK EPSRC [EP/P022197/1]
  2. EU H2020 European Microkelvin Platform [824109]
  3. Interdisciplinary Scientific and Educational School of Moscow State University Photonic and Quantum Technologies. Digital Medicine

Ask authors/readers for more resources

Researchers have successfully demonstrated real-time detection of single quantum vortices in superfluid He-4 at 10 millikelvin using nanoscale resonant beams. By controlling the vortex density in the environment, they observed the processes of vortex capture and release.
Since we still lack a theory of classical turbulence, attention has focused on the conceptually simpler turbulence in quantum fluids. Reaching a better understanding of the quantum case may provide additional insight into the classical counterpart. That said, we have hitherto lacked detectors capable of the real-time, non-invasive probing of the wide range of length scales involved in quantum turbulence. Here we demonstrate the real-time detection of quantum vortices by a nanoscale resonant beam in superfluid He-4 at 10mK. Essentially, we trap a single vortex along the length of a nanobeam and observe the transitions as a vortex is either trapped or released, detected through the shift in the beam resonant frequency. By exciting a tuning fork, we control the ambient vortex density and follow its influence on the vortex capture and release rates demonstrating that these devices are capable of probing turbulence on the micron scale. Previous work has shown the detection of quantum turbulence with mechanical resonators but with limited spatial and temporal resolution. Here, the authors demonstrate real-time detection of single quantum vortices in superfluid He-4 with millisecond and micron resolution at temperatures of 10 millikelvin.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.8
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available