4 papers
First Search for Ultraheavy Dark Matter Using a Magnetically Levitated Particle
Dennis G. Uitenbroek, Dorian W. P. Amaral, Juehang Qin +4
We present the first search for ultraheavy dark matter using a magnetically levitated particle. The POLONAISE experiment uses a milligram-scale ferromagnet levitated in a supercond…
Picometer control of a levitating milligram gravity sensor
Dennis G. Uitenbroek, Jurriaan Langendorff, Tjerk H. Oosterkamp
Due to their exceptional isolation from the environment, magnetically levitated particles are explored as extremely sensitive mechanical sensors. For future gravity experiments on…
First Search for Ultralight Dark Matter Using a Magnetically Levitated Particle
Dorian W. P. Amaral, Dennis G. Uitenbroek, Tjerk H. Oosterkamp +1
We perform the first search for ultralight dark matter using a magnetically levitated particle. A sub-millimeter permanent magnet is levitated in a superconducting trap with a meas…
Current experimental upper bounds on spacetime diffusion
Martijn Janse, Dennis G. Uitenbroek, Loek van Everdingen +3
A consistent theory describing the dynamics of quantum systems interacting on a classical space-time was recently put forward by Oppenheim et al..[1, 2]. Quantum states may retain…