Optimal control technique for Many Body Quantum Systems dynamics

Details Optimal control technique for Many Body Quantum Systems dynamics Optimal control technique for Many Body Quantum Systems dynamics

2010-03-19

arxiv.org/abs/1003.3750v2

Phys. Rev. Lett. 106, 190501 (2011)

Physics

Quantum Physics

5 pages, 4 figures, published version

Scientific paper

We present an efficient strategy for controlling a vast range of non-integrable quantum many body one-dimensional systems that can be merged with state-of-the-art tensor network simulation methods like the density Matrix Renormalization Group. To demonstrate its potential, we employ it to solve a major issue in current optical-lattice physics with ultra-cold atoms: we show how to reduce by about two orders of magnitudes the time needed to bring a superfluid gas into a Mott insulator state, while suppressing defects by more than one order of magnitude as compared to current experiments [1]. Finally, we show that the optimal pulse is robust against atom number fluctuations.

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