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arXiv · 1205.1521

Measuring entanglement growth in quench dynamics of bosons in an optical lattice

A. J. Daley·H. Pichler·J. Schachenmayer·P. Zoller
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Abstract

We discuss a scheme to measure the many-body entanglement growth during quench dynamics with bosonic atoms in optical lattices. By making use of a 1D or 2D setup in which two copies of the same state are prepared, we show how arbitrary order Renyi entropies can be extracted using tunnel-coupling between the copies and measurement of the parity of on-site occupation numbers, as has been performed in recent experiments. We illustrate these ideas for a Superfluid-Mott insulator quench in the Bose-Hubbard model, and also for hard-core bosons, and show that the scheme is robust against imperfections in the measurements.

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A. J. Daley, H. Pichler, J. Schachenmayer, P. Zoller. 2012-05-07. Measuring entanglement growth in quench dynamics of bosons in an optical lattice. https://doi.org/10.1103/physrevlett.109.020505

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