Fig. 2: Fast rotation of a levitated nanodiamond.
From: Quantum control and Berry phase of electron spins in rotating levitated diamonds in high vacuum
a Optical image of the surface ion trap. AC voltage signals (\(A\sin (\omega t+\varphi )\)) with the same frequency (ω) and amplitude (A) but different phases (φ) are applied to the four corner electrodes to generate a rotating electric field. The phase is different by π/2 between neighboring electrodes. DC1, DC2, DC3 and DC4 are compensation voltages that minimize the micromotion to stabilize the trap. b Simulation of the electric potential in the z = 253 μm plane at t = 0. The amplitude is A = 10 V. (c) PSDs of the rotational motion of the levitated nanodiamond at the rotation frequencies from 0.1 MHz to 20 MHz. The pressure is 1.0 × 10−4 Torr.
