Recently, we were able to perform the first quantum test of the universality of free fall using two different atomic species yielding an Eötvös ratio of (0.3±5.4)x10-7. In order to mitigate systematic effects, we plan to employ an optical dipole trap at a wavelength of 2µm in the future. In addition, since our short term stability is solely limited by environmental vibrational noise, we are investigating correlation of classical high-bandwidth seimsmometers/accelerometers for post-correction algorithms in order to overcome the current stability limitation.
First quantum test of the universality of free fall:
Optical dipole trap at a wavelength of 2µm in the future:
Extension of dual-species measurements to pulse separation times of up to T=100ms are currently underway.
Letzte Änderung: 20.04.22; Prof. Dr. Rasel
