Darmstadt 2008 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 28: Poster Quanteninformation

Q 28.4: Poster

Dienstag, 11. März 2008, 16:30–19:00, Poster C2

A planar Paul trap — •Robert Matjeschk, Christian Schneider, Hector Schmitz, Axel Friedenauer, Jan Glückert und Tobias Schätz — MPI für Quantenoptik, Hans-Kopfermann Str. 1, 85748 Garching

In recent years, along with the idea of quantum-computing, the concept of quantum-simulations arose. This is considered to be a new approach to investigate the dynamics of quantum many-body systems in nature. A promising realization is the simulation based on trapped ions, in particular in Paul traps. Besides the principle study of feasibility, an important issue is scalability - the possibility to confine and control many ions. A magnitude of 100 to 1000 ions is supposed to lead to new insight into quantum many-body dynamics.

In linear traps this scalability is hindered by the fact that all ions are trapped in one effective oscillator potential. This leads for example to a non-homogeneous distance distribution and thus to a non-homogeneous interaction strength distribution between the ions. Also in such assemblies only one dimensional systems could be simulated.

We are developing a 2D-surface-trap where each ion is confined in its own effective oscillator potential, while the (homogeneous) distance between the ions is still small enough (30-50 µm) to maintain a non-negligible ion-ion interaction (mediated by coulomb forces). The ions will be aranged in a two-dimensional plane, adressing yet unsolved two-dimensional problems like spin frustration in 2D lattices.