The adiabatic theorem (Born and Fock, 1928) is a very powerful result in quantum physics. I will present a few results that demonstrate the stimulated Raman adiabatic passage (STIRAP) in a three-level artificial atom (a superconducting transmon circuit) as well as the realization of superadiabatic processes on the same experimental platform. In the case of superadiabatic STIRAP (sa-STIRAP) I will show the correspondence with a three-spin lattice system, how the counter-adiabatic drive produces Peierls couplings, and how the evolution of the system can be controlled by a synthetic gauge-invariant phase. Finally, I will present the Majorana star representation of these protocols.
Dr. Sorin Paraoanu did his undergraduate studies in physics at the University of Bucharest, Romania. He continued with a Ph.D. in ultracold quantum gases at the University of Illinois at Urbana-Champaign, U.S.A. He had postdoctoral positions at the University of Jyväaskylä, Finland. Since 2007 he has been at Aalto University in Helsinki, Finland, where he is leading an experimental group working on circuit QED.