Berlin 2005 – wissenschaftliches Programm

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Q: Quantenoptik und Photonik

Q 3: Poster Quanteninformation, -kommunikation und Quantencomputer

Q 3.1: Poster

Freitag, 4. März 2005, 11:00–12:30, Poster HU

Towards probabilistic entanglement of distant atoms — •Markus Hennrich, Felix Rohde, Carsten Schuck, and Jürgen Eschner — ICFO - Institut de Ciències Fotòniques, Jordi Girona 29, Nexus II, 08034 - Barcelona, Spain

Non-local entanglement is considered a key resource in future quantum information processing. One of its applications is the implementation of quantum communication schemes over long distances [1]. Such non-local entanglement has been realized e.g. between two photons [2] and between an atom and a photon [3]. A proximate step towards distributed quantum information processing is the generation of entanglement of distant massive particles like single atoms, as e.g. proposed by Cabrillo et al. [4]. This scheme relies on the projective measurement of photons scattered from two distant atoms after excitation by a common laser pulse. Here we describe our plans for an experimental realization of this scheme.

[1] H.-J. Briegel et al., Phys. Rev. Lett. 81, 5932 (1998).

[2] P. G. Kwiat et al., Phys. Rev. Lett. 75, 4337 (1995).

[3] B. B. Blinov et al., Nature 428, 153 (2004).

[4] C. Cabrillo et al., Phys. Rev. A 59, 1025 (1999).