"Squeezing" is used in physics, among other things, to improve the resolution of measuring instruments. It allows disturbing noise to be suppressed in a way that smaller signals can be detected more sensitively.
The research team led by physicist Professor Eva Weig at the University of Konstanz has now been able to show how such a squeezed state can be measured in a much simpler way than with the existing methods.
Moreover, the new method allows examining squeezed states in systems where such measurements were not possible before.
The results are published in the current issue of the journal Physical Review X.
Read the full article at campus.kn, the online magazine of the University of Konstanz: https:/
- Original publication: J. S. Huber, G. Rastelli, M. J. Seitner, J. Kölbl, W. Belzig, M. I. Dykman, and E. M. Weig. Spectral evidence of squeezing of a weakly damped driven nanomechanical mode. Physical Review X, 10, 021066, published on 23 June 2020
- Development of a new method for measuring "squeezing".
- Experiment by Jana Huber from the Nanomechanics Group of Professor Eva Weig at the University of Konstanz.
- Theoretical model by Professor Wolfgang Belzig and Dr Gianluca Rastelli from the University of Konstanz and Professor Mark Dykman from Michigan State University (USA).
- With financial support from the European FET Proactive Project HOT (732894), the German Federal Ministry of Education and Research (BMBF) as part of the QuantERA Project QuaSeRT (13N14777), and the Collaborative Research Centre SFB 767 "Controlled Nanosystems" at the University of Konstanz. Mark Dykman's research is funded by the National Science Foundation (Grant ? DMR-1806473). He is a Senior Fellow of the Zukunftskolleg at the University of Konstanz.
- campus.kn is the University of Konstanz's online magazine. We use multimedia approaches to provide insights into our research and science, study and teaching as well as life on campus.
Note to editors: Images can be downloaded here:
Caption: "Satellites" in the spectrum of a vibrating nanostring (lower image insert) for increasing drive power. The different brightnesses of the upper (green) and lower (blue) satellite encode the strength of the squeezing (upper image insert).
Image: Weig Group, University of Konstanz
Caption: Professor Eva Weig, Universität Konstanz
Image: University of Konstanz
Caption: Jana Huber, University of Konstanz
Image: Rainer M. Hohnhaus
Julia Wandt | EurekAlert!
Beneath the surface of our galaxy's water worlds
25.06.2020 | DOE/Argonne National Laboratory
All-clear in space – Cuddling inside a nebula does not have to end in a catastrophe
24.06.2020 | Universität Potsdam
With an X-ray experiment at the European Synchrotron ESRF in Grenoble (France), Empa researchers were able to demonstrate how well their real-time acoustic monitoring of laser weld seams works. With almost 90 percent reliability, they detected the formation of unwanted pores that impair the quality of weld seams. Thanks to a special evaluation method based on artificial intelligence (AI), the detection process is completed in just 70 milliseconds.
Laser welding is a process suitable for joining metals and thermoplastics. It has become particularly well established in highly automated production, for...
A research team from the Max Planck Institute for the Structure of Dynamics (MPSD) and the University of Oxford has managed to drive a prototypical antiferromagnet into a new magnetic state using terahertz frequency light. Their groundbreaking method produced an effect orders of magnitude larger than previously achieved, and on ultrafast time scales. The team’s work has just been published in Nature Physics.
Magnetic materials have been a mainstay in computing technology due to their ability to permanently store information in their magnetic state. Current...
The Venus flytrap (Dionaea muscipula) takes only 100 milliseconds to trap its prey. Once their leaves, which have been transformed into snap traps, have...
NASA-NOAA's Suomi NPP satellite observed a huge Saharan dust plume streaming over the North Atlantic Ocean, beginning on June 13. Satellite data showed the dust had spread over 2,000 miles.
At NASA's Goddard Space Flight Center in Greenbelt, Maryland, Colin Seftor, an atmospheric scientist, created an animation of the dust and aerosols from the...
Molecular switches are the molecular counterparts of electrical switches and play an important role in many processes in nature. Nanotechnologist now produced a photographic film at the atomic level and thus tracked the motion of a molecular building block. The result was a light-controlled "pedalo-type motion", going forward and backward. The study has been published in the "The Journal of Physical Chemistry Letters".
Molecular switches – they are the molecular counterparts of electrical switches and play an important role in many processes in nature. Such molecules can...
19.05.2020 | Event News
07.04.2020 | Event News
06.04.2020 | Event News
25.06.2020 | Earth Sciences
25.06.2020 | Physics and Astronomy
25.06.2020 | Physics and Astronomy