Characterization of Bose-Hubbard Models with Quantum Non-demolition Measurements
arXiv:1408.2533 · doi:10.1103/PhysRevA.90.043618
Abstract
We propose a scheme for the detection of quantum phase transitions in the 1D Bose-Hubbard (BH) and 1D Extended Bose-Hubbard (EBH) models, using the non-demolition measurement technique of quantum polarization spectroscopy. We use collective measurements of the effective total angular momentum of a particular spatial mode to characterise the Mott insulator to superfluid phase transition in the BH model, and the transition to a density wave state in the EBH model. We extend the application of collective measurements to the ground states at various deformations of a super-lattice potential.
8 pages, 9 figures; published version in PRA, Editors' Suggestion
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