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L. Martinetz, K. Hornberger, J. Millen, M. S. Kim, and B. A. Stickler
Quantum electromechanics with levitated nanoparticles
npj Quantum Inf. 6, 101 (2020)


Preparing and observing quantum states of nanoscale particles is a challenging task with great relevance for quantum technologies and tests of fundamental physics. In contrast to atomic systems with discrete transitions, nanoparticles exhibit a practically continuous absorption spectrum and thus their quantum dynamics cannot be easily manipulated. Here, we demonstrate that charged nanoscale dielectrics can be artificially endowed with a discrete level structure by coherently interfacing their rotational and translational motion with a superconducting qubit. We propose a pulsed scheme for the generation and read-out of motional quantum superpositions and entanglement between several levitated nanoparticles, providing an all-electric platform for networked hybrid quantum devices.

(8 pages, 3 figures)   [pdf, journal, arXiv:2005.14006]

doi:10.1038/s41534-020-00333-7            (Open Access, CCA 4.0 International License)