By Yoav Sagi
Ultra-cold atomic ensembles have emerged lately as a strong instrument in many-body physics learn, quantum info technological know-how and metrology. This thesis provides an experimental and theoretical learn of the coherent homes of trapped atomic ensembles at excessive densities, that are necessary to a few of the aforementioned functions. The examine makes a speciality of how inter-particle interactions adjust the ensemble coherence dynamics, and if it is attainable to increase the coherence time through exterior keep watch over. The thesis provides a theoretical version and is the reason the impression of elastic collision of the coherence dynamics after which experiences on experiments which try this version effectively within the lab. moreover, the paintings comprises the 1st implementation of dynamical decoupling with ultra-cold atomic ensembles. it really is proven experimentally that by utilizing dynamical decoupling the coherence time should be prolonged 20-fold. This has an outstanding strength to extend the usefulness of those ensembles for quantum computation.
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