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Adiabatic Mach-Zehnder interferometry on a quantized Bose-Josephson junction

Li (Lee), Chaohong


We propose a scheme to achieve Mach-Zehnder interferometry using a quantized Bose-Josephson junction with a negative charging energy. The quantum adiabatic evolution through a dynamical bifurcation is used to accomplish the beam splitting and recombination. The negative charging energy ensures the existence of a path-entangled state which enhances the phase measurement precision to the Heisenberg limit. A feasible detection procedure is also presented. The scheme should be realizable...[Show more]

CollectionsANU Research Publications
Date published: 2006-10-10
Type: Journal article
Source: Physical Review Letters
DOI: 10.1103/PhysRevLett.97.150402


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