Characterization of Bose-Hubbard models with quantum nondemolition measurements

被引：20

作者：

Rogers, B. ^{[1
]}

Paternostro, M. ^{[1
]}

Sherson, J. F. ^{[2
]}

De Chiara, G. ^{[1
]}

机构：

[1] Queens Univ Belfast, Ctr Theoret Atom Mol & Opt Phys, Belfast BT7 1NN, Antrim, North Ireland

[2] Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark

来源：

PHYSICAL REVIEW A | 2014年 / 90卷 / 04期

基金：

英国工程与自然科学研究理事会;

关键词：

MOTT INSULATOR; SUPERFLUID; TRANSITION;

D O I：

10.1103/PhysRevA.90.043618

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose a scheme for the detection of quantum phase transitions in the one-dimensional (1D) Bose-Hubbard (BH) and 1D Extended Bose-Hubbard (EBH) models, using the nondemolition measurement technique of quantum polarization spectroscopy. We use collective measurements of the effective total angular momentum of a particular spatial mode to characterize 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 superlattice potential.

引用

页数：8

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