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arXiv · 1408.2533

Characterization of Bose-Hubbard Models with Quantum Non-demolition Measurements

B. Rogers·M. Paternostro·J. F. Sherson·G. De Chiara
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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.

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B. Rogers, M. Paternostro, J. F. Sherson, G. De Chiara. 2014-11-11. Characterization of Bose-Hubbard Models with Quantum Non-demolition Measurements. https://doi.org/10.1103/physreva.90.043618

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