Hannover 2013 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 33: Quantum information: Concepts and methods II
Q 33.4: Vortrag
Dienstag, 19. März 2013, 14:45–15:00, E 214
Scalable Reconstruction Schemes for Quantum State Tomography — •Tillmann Baumgratz1, Marcus Cramer1, David Gross2, and Martin B. Plenio1 — 1Institut für Theoretische Physik, Albert-Einstein-Allee 11, Universität Ulm, D-89069 Ulm, Germany — 2Physikalisches Institut, Hermann-Herder-Straße 3, Albert-Ludwigs Universität Freiburg, 79104 Freiburg i.Br., Germany
The ability to store and manipulate interacting quantum many-body systems, such as linearly arranged ions in ion traps, photonic implementations, and cold atoms in optical lattices, enhanced rapidly during the last years. By now, the number of controllable particles in such systems has reached sizes for which conventional methods of quantum tomography fail due to both, experiment time and post-processing resources. We discuss applications of recently developed strategies [1,2] to reconstruct state representations which are fully determined by a small fraction of the informationally complete measurements. Experimentally relevant examples for ion-trap, photonic, and cold-gases setups will be presented.
[1] M. Cramer, M.B. Plenio, S.T. Flammia, R. Somma, D. Gross, S.D. Bartlett, O. Landon-Cardinal, D. Poulin and Y.-K. Liu, Nat. Commun. 1, 149 (2010).
[2] T. Baumgratz, D. Gross, M. Cramer and M.B. Plenio, arXiv:1207.0358.