Detection of entanglement in ultracold lattice gases
arXiv:1105.2446 · doi:10.1007/s10909-011-0403-8
Abstract
We propose the use of quantum polarization spectroscopy for detecting multi-particle entanglement of ultracold atoms in optical lattices. This method, based on a light-matter interface employing the quantum Farady effect, allows for the non destructive measurement of spin-spin correlations. We apply it to the specific example of a one dimensional spin chain and reconstruct its phase diagram using the light signal, readily measurable in experiments with ultracold atoms. Interestingly, the same technique can be extended to detect quantum many-body entanglement in such systems.
Submitted to the Special Issue: "Strong correlations in Quantum Gases" in The Journal of Low Temperature Physics
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- NOON States via Quantum Walk of Bound Particles
- Detecting phase boundaries of quantum spin-1/2 XXZ ladder via bipartite and multipartite entanglement transitions
- Entanglement classification and \emph{non-k}-separability certification via Greenberger-Horne-Zeilinger-class fidelity