We present an efficient strategy for controlling a vast range of nonintegrable quantum many-body one-dimensional systems that can be merged with state-of-the-art tensor network simulation methods such as the density matrix renormalization group. To demonstrate its potential, we employ it to solve a major issue in current optical-lattice physics with ultracold atoms: we show how to reduce by about 2 orders of magnitude the time needed to bring a superfluid gas into a Mott insulator state, while suppressing defects by more than 1 order of magnitude as compared to current experiments. Finally, we show that the optimal pulse is robust against atom number fluctuations. © 2011 American Physical Society.
Doria, P., Calarco, T., Montangero, S. (2011). Optimal control technique for many-body quantum dynamics. PHYSICAL REVIEW LETTERS, 106(19), 1-4 [10.1103/PhysRevLett.106.190501].
Optimal control technique for many-body quantum dynamics
Calarco T.;
2011
Abstract
We present an efficient strategy for controlling a vast range of nonintegrable quantum many-body one-dimensional systems that can be merged with state-of-the-art tensor network simulation methods such as the density matrix renormalization group. To demonstrate its potential, we employ it to solve a major issue in current optical-lattice physics with ultracold atoms: we show how to reduce by about 2 orders of magnitude the time needed to bring a superfluid gas into a Mott insulator state, while suppressing defects by more than 1 order of magnitude as compared to current experiments. Finally, we show that the optimal pulse is robust against atom number fluctuations. © 2011 American Physical Society.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
