We experimentally demonstrate the stable trapping of a permanent magnet sphere above a lead superconductor, at vacuum pressures of 4 x 10(-8) mbar. The levitating magnet behaves as a harmonic oscillator, with frequencies in the 4-31 Hz range detected, and shows promise to be an ultrasensitive acceleration sensor. We directly apply an acceleration to the magnet with a current carrying wire, which we use to measure a background noise of similar to 10(-10) m/root Hz at 30.75 Hz frequency. With current experimental parameters, we find an acceleration sensitivity of S-a(1/2) = 1.2 +/- 0.2 x 10(-10) g/root Hz, for a thermal noise limited system. By considering a 300 mK environment, at a background helium pressure of 1 x 10(-10) mbar, acceleration sensitivities of S-a(1/2) similar to 3 x 10(-15) g/root Hz could be possible with ideal conditions and vibration isolation. To feasibly measure with such a sensitivity, feedback cooling must be implemented. Published under license by AIP Publishing.
Acceleration sensing with magnetically levitated oscillators above a superconductor / Timberlake, C; Gasbarri, G; Vinante, A; Setter, A; Ulbricht, H. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - 115:22(2019). [10.1063/1.5129145]
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Titolo: | Acceleration sensing with magnetically levitated oscillators above a superconductor | |
Autori: | Timberlake, C; Gasbarri, G; Vinante, A; Setter, A; Ulbricht, H | |
Autori Unitn: | ||
Titolo del periodico: | APPLIED PHYSICS LETTERS | |
Anno di pubblicazione: | 2019 | |
Numero e parte del fascicolo: | 22 | |
Codice identificativo WOS: | WOS:000504304100028 | |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1063/1.5129145 | |
Handle: | http://hdl.handle.net/11572/343884 | |
Citazione: | Acceleration sensing with magnetically levitated oscillators above a superconductor / Timberlake, C; Gasbarri, G; Vinante, A; Setter, A; Ulbricht, H. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - 115:22(2019). [10.1063/1.5129145] | |
Appare nelle tipologie: | 03.1 Articolo su rivista (Journal article) |