Dresden 2011 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 47: Quantum Information: Quantum Computer
Q 47.1: Vortrag
Donnerstag, 17. März 2011, 10:30–10:45, BAR Schön
Digital quantum simulation with trapped ions — Benjamin P. Lanyon1,2, •Cornelius Hempel1,2, Markus Müller1,3, Florian Zähringer1,2, Markus Rambach2, René Gerritsma1, Philipp Schindler2, Daniel Nigg2, Julio T. Barreiro2, Markus Hennrich2, Rainer Blatt1,2, and Christian F. Roos1 — 1Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Technikerstr. 21a, 6020 Innsbruck, Austria — 2Institut für Experimentalphysik, Universität Innsbruck, Technikerstr. 25, 6020 Innsbruck, Austria — 3Institut für Theoretische Physik, Universität Innsbruck, Technikerstr. 25, 6020 Innsbruck, Austria
A universal quantum simulator is a highly controllable quantum system that can be programmed to efficiently simulate the dynamics of any other quantum system with local interactions. The long term goal is to use such a device to gain new insights into quantum systems, which are believed to be permanently beyond the calculating power of the conventional classical model of information processing. Quantum simulations performed to date have been ’analog’, whereas in this work we demonstrate an alternative and potentially more powerful approach known as digital quantum simulation [1]. We use a system of trapped ions, on which a finite set of coherent operations is performed, to simulate a range of different systems of interacting spin-1/2 particles, including the Ising, XY and Heisenberg models. Using complex stroboscopic sequences of up to 80 coherent operations, we achieve accurate digital simulations of both time-independent and time-dependent dynamics. [1] Lloyd, S., Science 273, 1073 (1996).