The development of experimental methods to control the motion of, and trap, atoms and molecules in highly-excited Rydberg states using inhomogeneous electric fields  has opened new opportunities in a range of research areas, from quantum information processing [2,3] to antimatter physics .
In this talk I will describe these experimental methods with the example of a chip-based trap architecture that we have recently developed. I will then present the results of experiments in the areas of (i) hybrid quantum information processing, (ii) low-energy atom-molecule scattering , and (iii) positronium physics in which we exploit these techniques.
 S. D. Hogan, EPJ Techniques and Instrumentation 3, 1 (2016)
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 S. D. Hogan, J. A. Agner, F. Merkt, T. Thiele, S. Filipp, and A. Wallraff, Phys. Rev. Lett. 108, 063004 (2012)
 A. Deller, A.M. Alonso, B. S. Cooper, S. D. Hogan, and D. B. Cassidy, Phys. Rev. Lett. 117, 073202 (2016)
 V. Zhelyazkova and S. D. Hogan, Phys. Rev. A 95, 042710 (2017)