Darmstadt 2008 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 2: Quanteninformation (Atome und Ionen I)
Q 2.1: Group Report
Monday, March 10, 2008, 14:00–14:30, 1B
Entanglement and Quantum Networking with Trapped Atoms — •David Moehring1,2, Jörg Bochmann1, Dzmitry Matsukevich2,3, Peter Maunz2,3, Martin Mücke1, Tobias Müller1, Steven Olmschenk2,3, Holger Specht1, Bernhard Weber1, Christopher Monroe2,3, and Gerhard Rempe1 — 1Max-Planck-Institut für Quantenoptik, D-85748 Garching, Germany — 2FOCUS Center and Department of Physics, University of Michigan, Ann Arbor, MI 48109-1040, USA — 3JQI and Department of Physics, University of Maryland, College Park, Maryland 20742, USA
Distant, entangled qubits represent a universal resource for distributed quantum computing. One method to entangle two distant particles involves detecting a single photon from each particle after the photons have interfered. When two atoms each become entangled with an emitted single photon, subsequent interference and detection of these photons can leave the trapped atom qubits in an entangled state. Although this entanglement is probabilistic, it is not post-selective and therefore can be utilized for long-distance quantum communication and large-scale quantum computation.
I will discuss the experimental realization of remote-entanglement of two individually trapped ions separated by one meter [1] as well as current efforts toward deterministic entanglement via atoms trapped within high-finesse optical cavities [2,3].
[1] Moehring et al., Nature 449, 68 (2007)
[2] Wilk et al., Science 317, 488 (2007)
[3] Hijlkema et al., Nature Physics 3, 253 (2007)