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Ultrasensitive Inertial and Force Sensors with Diamagnetically Levitated Magnets
- Autor(en)
- J. Prat-Camps, C. Teo, C. C. Rusconi, W. Wieczorek, O. Romero-Isart
- Abstrakt
We theoretically show that a magnet can be stably levitated on top of a punctured superconductor sheet in the Meissner state without applying any external field. The trapping potential created by such induced-only superconducting currents is characterized for magnetic spheres ranging from tens of nanometers to tens of millimeters. Such a diamagnetically levitated magnet is predicted to be extremely well isolated from the environment. We propose to use it as an ultrasensitive force and inertial sensor. A magnetomechanical readout of its displacement can be performed by using superconducting quantum interference devices. An analysis using current technology shows that force and acceleration sensitivities on the order of 10-23 N/Hz (for a 100-nm magnet) and 10-14 g/Hz (for a 10-mm magnet) might be within reach in a cryogenic environment. Such remarkable sensitivities, both in force and acceleration, can be used for a variety of purposes, from designing ultrasensitive inertial sensors for technological applications (e.g., gravimetry, avionics, and space industry), to scientific investigations on measuring Casimir forces of magnetic origin and gravitational physics.
- Organisation(en)
- Quantenoptik, Quantennanophysik und Quanteninformation
- Externe Organisation(en)
- Österreichische Akademie der Wissenschaften (ÖAW), National University of Singapore (NUS), Chalmers University of Technology, Leopold-Franzens-Universität Innsbruck, Vienna Center for Quantum Science and Technology (VCQ)
- Journal
- Physical Review Applied
- Band
- 8
- Anzahl der Seiten
- 10
- ISSN
- 2331-7019
- DOI
- https://doi.org/10.1103/PhysRevApplied.8.034002
- Publikationsdatum
- 09-2017
- Peer-reviewed
- Ja
- ÖFOS 2012
- 103025 Quantenmechanik, 103033 Supraleitung
- Schlagwörter
- ASJC Scopus Sachgebiete
- Allgemeine Physik und Astronomie
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/b48f0c34-5a5f-4681-9a04-b3a6cade2f2b