Hannover 2010 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 40: Quantum Information: Quantum Computing
Q 40.1: Vortrag
Mittwoch, 10. März 2010, 16:30–16:45, F 128
Quantum error correction with trapped ions — •Philipp Schindler1, Thomas Monz1, Julio Thomas Barreiro1, Michael Chwalla1, Volckmar Nebendahl1, Markus Hennrich1, and Rainer Blatt1,2 — 1Inst. f. Exphysik, Universität, Innsbruck — 2Ins. f. Quantenoptik u. Quanteninformation, Innsbruck
We report on the experimental realization of a three-qubit quantum error-correcting code with trapped calcium ions. The implemented algorithm detects and corrects for a single-qubit phase error. The correction step is performed without any classical measurement and can therefore more easily be reapplied. The pulse sequence for this algorithm was compiled with the aid of an optimization technique resulting in a very compact sequence with a computational time similar to that of single Cirac-Zoller CNOT gate. We fully analyze the single qubit process with quantum process tomography and achieve a process fidelity of F=84(2)%.