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Stroboscopic observation of quantum many-body dynamics

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Marquardt,  Florian
Marquardt Group, Associated Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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Citation

Kessler, S., Holzner, A., McCulloch, I. P., von Delft, J., & Marquardt, F. (2012). Stroboscopic observation of quantum many-body dynamics. PHYSICAL REVIEW A, 85(1): 011605. doi:10.1103/PhysRevA.85.011605.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-6907-D
Abstract
Recent experiments have demonstrated single-site resolved observation of cold atoms in optical lattices. Thus, in the future it may be possible to take repeated snapshots of an interacting quantum many-body system during the course of its evolution. Here we address the impact of the resulting quantum (anti-)Zeno physics on the many-body dynamics. We use the time-dependent density-matrix renormalization group to obtain the time evolution of the full wave function, which is then periodically projected in order to simulate realizations of stroboscopic measurements. For the example of a one-dimensional lattice of spinless fermions with nearest-neighbor interactions, we find regimes for which many-particle configurations are stabilized or destabilized, depending on the interaction strength and the time between observations.