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TT: Tiefe Temperaturen

TT 32: Transport: Quantum Coherence and Quantum Information Systems - Part 2

TT 32.9: Vortrag

Donnerstag, 30. März 2006, 16:15–16:30, HSZ 304

Adiabatic passage in superconducting nanocircuits — •Jens Siewert^1,2, Tobias Brandes³, and Giuseppe Falci¹ — ¹MATIS-INFM, CNR and DMFCI, University of Catania, I-95125 Catania, Italy — ²Institut fuer Theoretische Physik, University of Regensburg, D-93040 Regensburg, Germany — ³Department of Physics, The University of Manchester, Manchester M60 1QD, United Kingdom

With the rapid technological progress in quantum-state engineering in superconducting devices there is an increasing demand for techniques of quantum control. Stimulated Raman adiabatic passage (STIRAP) is a powerful method in quantum optics which has remained largely unknown to solid-state physicists. It is used to achieve highly efficient and controlled population transfer in (discrete) multilevel quantum systems. Apart from other potential applications in solid-state physics, adiabatic passage offers interesting possibilities to manipulate qubit circuits, in particular for the generation of nonclassical states in nanomechanical or electromagnetic resonators. In this contribution, we explain the idea of the method and describe examples of controlled quantum dynamics in superconducting nanocircuits by applying adiabatic passage.