%0 Generic %1 hofer2022highq %A Hofer, Joachim %A Higgins, Gerard %A Huebl, Hans %A Kieler, Oliver F. %A Kleiner, Reinhold %A Koelle, Dieter %A Schmidt, Philip %A Slater, Joshua A. %A Trupke, Michael %A Uhl, Kevin %A Weimann, Thomas %A Wieczorek, Witlef %A Wulschner, Friedrich %A Aspelmeyer, Markus %D 2022 %I arXiv %K Q-factor levitated magnetic superconducting %T High-Q magnetic levitation and control of superconducting microspheres at millikelvin temperatures %X We report the levitation of a superconducting lead-tin sphere with 100 micrometer diameter (corresponding to a mass of 5.6 micrograms) in a static magnetic trap formed by two coils in an anti-Helmholtz configuration, with adjustable resonance frequencies up to 240 hertz. The center-of-mass motion of the sphere is monitored magnetically using a dc-SQUID as well as optically and exhibits quality factors of up to 2.6e7. We also demonstrate 3D magnetic feedback control of the sphere's motion. By implementing a cryogenic vibration isolation system we can attenuate environmental vibrations at 200 hertz by approximately seven orders of magnitude. The combination of low temperature (15 millikelvin), large mass and high quality factor as well as adjustable resonance frequencies provides a promising platform for testing quantum physics in previously unexplored regimes with high mass and long coherence times.

@misc{hofer2022highq, abstract = {We report the levitation of a superconducting lead-tin sphere with 100 micrometer diameter (corresponding to a mass of 5.6 micrograms) in a static magnetic trap formed by two coils in an anti-Helmholtz configuration, with adjustable resonance frequencies up to 240 hertz. The center-of-mass motion of the sphere is monitored magnetically using a dc-SQUID as well as optically and exhibits quality factors of up to 2.6e7. We also demonstrate 3D magnetic feedback control of the sphere's motion. By implementing a cryogenic vibration isolation system we can attenuate environmental vibrations at 200 hertz by approximately seven orders of magnitude. The combination of low temperature (15 millikelvin), large mass and high quality factor as well as adjustable resonance frequencies provides a promising platform for testing quantum physics in previously unexplored regimes with high mass and long coherence times.}, added-at = {2023-03-03T19:33:55.000+0100}, archiveprefix = {arXiv}, author = {Hofer, Joachim and Higgins, Gerard and Huebl, Hans and Kieler, Oliver F. and Kleiner, Reinhold and Koelle, Dieter and Schmidt, Philip and Slater, Joshua A. and Trupke, Michael and Uhl, Kevin and Weimann, Thomas and Wieczorek, Witlef and Wulschner, Friedrich and Aspelmeyer, Markus}, biburl = {https://www.bibsonomy.org/bibtex/24f5aba1724ff76850f87fc09dcb8b06b/nanospheres}, description = {High-Q magnetic levitation and control of superconducting microspheres at millikelvin temperatures}, eprint = {2211.06289}, interhash = {3524a0f7629cf8ad3ac535991ba8ad98}, intrahash = {4f5aba1724ff76850f87fc09dcb8b06b}, keywords = {Q-factor levitated magnetic superconducting}, publisher = {arXiv}, timestamp = {2023-03-08T19:38:17.000+0100}, title = {High-{Q} magnetic levitation and control of superconducting microspheres at millikelvin temperatures}, year = 2022 }