Adiabatic Mach-Zehnder Interferometry on A Quantized Bose-Josephson Junction

Abstract

We propose a scheme to achieve a Mach-Zehnder interferometry using a quantized Bose-Josephson junction with 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 with current technology.

Revised version, 4 pages, 4 figures, Accepted for publication in Physical Review Letters

References in corpus (3)

• Matter-wave interferometry in a double well on an atom chip
• Enhanced Quantum Reflection of Matter-Wave Solitons
• Phase-Dependent Spontaneous Spin Polarization and Bifurcation Delay in Coupled Two-Component Bose-Einstein Condensates

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• Optimized Double-well quantum interferometry with Gaussian squeezed-states
• Nonlinearity-assisted quantum tunneling in a matter-wave interferometer
• Ground-State Properties for Coupled Bose-Einstein Condensates inside a Cavity Quantum Electrodynamics