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Q: Quantenoptik und Photonik

Q 13: Quantencomputer

Q 13.1: Gruppenbericht

Dienstag, 23. März 2004, 11:00–11:30, HS 101

Towards an ion-trap quantum computer — •Tobias Schaetz, M. Barrett, J. Britton, J. Cheverini, W.M. Itano, J. Jost, C. Langer, D. Leibfried, R. Ozeri, T. Rosenband, and D.J. Wineland — NIST, 325 Broadway, 80305 Boulder CO, USA

We discuss experiments devoted to realizing the elements of quantum information processing using trapped atomic Be+ ions. Recent work includes (1) distribution of entanglement over a multi-zone trap structure (2) demonstration of a dense-coding protocol, (3) demonstration of enhanced qubit detection efficiency using quantum logic, and (4) generation of GHZ states and their application to enhanced precision in spectroscopy. We discuss efforts towards realizing more complicated protocols such as teleportation, and work devoted to incorporation of sympathetic cooling in a multiplexed trap structure.

* Supported NSA, ARDA, NIST and DFG (Scha 973/1-1)