Heidelberg 2015 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 15: Poster: Quantum Optics and Photonics I

Q 15.18: Poster

Montag, 23. März 2015, 17:00–19:00, C/Foyer

Towards multi-body entanglement in optical latticesHanning Dai1,2, •Bing Yang1,2, Xiaofan Xu1, Andreas Reingruber1, Qi Shen2, Zhensheng Yuan2, and Jianwei Pan1,21Physikalisches Institut, University Heidelberg — 2Hefei National Laboratory for Physical Science at Microscale and Department of Modern Physics, University of Science and Technology of China

Neutral atoms in optical lattices have the advantage of a natural scalability towards large qubit numbers and a weak coupling to the environment, leading to long decoherence time. However, the creation of multi-partite entanglement and the unambiguous characterization of it in optical lattices still remain challenging.

Here we propose an experiment towards the perparation of a 4-qubit GHZ-type state in an optical plaquette and introduce the progress of the project. Recently, by using two superlattices along perpendicular directions, a four-site optical plaquettes have been realized. By employing a spin-dependent superlattice, one can achieve state initialization as well as spin and site resolved addressing and detection, the key prerequisites to prepare and observe multi-body correlations in optical lattices.

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