Quantum Memory Assisted Probing of Dynamical Spin Correlations
Abstract
We propose a method to probe time dependent correlations of non trivial observables in many-body ultracold lattice gases. The scheme uses a quantum non-demolition matter-light interface, first, to map the observable of interest on the many body system into the light and, then, to store coherently such information into an external system acting as a quantum memory. Correlations of the observable at two (or more) instances of time are retrieved with a single final measurement that includes the readout of the quantum memory. Such method brings at reach the study of dynamics of many-body systems in and out of equilibrium by means of quantum memories in the field of quantum simulators.
Cite
@article{arxiv.1105.6308,
title = {Quantum Memory Assisted Probing of Dynamical Spin Correlations},
author = {O. Romero-Isart and M. Rizzi and C. A. Muschik and E. S. Polzik and M. Lewenstein and A. Sanpera},
journal= {arXiv preprint arXiv:1105.6308},
year = {2012}
}
Comments
4.1 pages, 2 figures, accepted version, additional material and proof's corrections not included