File:Schematic depiction of the experimental setup for measuring gravity with milligram levitated masses.jpg

English: "(A) Multistage mass spring system to isolate from external vibrations, as discussed in the text. Electromagnetic shielding of the trap is discussed in the Supplementary Materials A. (B) Conventions for degrees of freedom adopted from Vinante et al. (33). Detection by SQUID as discussed in the text. Calibration loop as discussed in the text and Supplementary Materials C. (C) An image of the dilution refrigerator used for the experiments, including the multistage mass spring system. (D) The magnetic particle, composed of three 0.25 mm by 0.25 mm by 0.25 mm Nd2Fe14B magnets (SuperMagnetMan, C0005-10) magnetically attached end-to-end and a single spherical glass bead with a 0.25-mm radius attached using Stycast to the middle of the magnets, which is used to break the symmetry of the γ mode. (E) The trap, as placed in the aluminum holder without the shielding cylinder. The aluminum foil envelope provides additional electromagnetic shielding between the calibration transformer and the pick-up loop. Further details and images of the setup are shown in Supplementary Materials A."