Quantum Memory Assisted Probing of Dynamical Spin Correlations

Details Quantum Memory Assisted Probing of Dynamical Spin Correlations Quantum Memory Assisted Probing of Dynamical Spin Correlations

2011-05-31

arxiv.org/abs/1105.6308v2

Phys. Rev. Lett. 108, 065302 (2012)

Physics

Quantum Physics

4.1 pages, 2 figures, accepted version, additional material and proof's corrections not included

Scientific paper

10.1103/PhysRevLett.108.065302

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.

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