Magnetic dipolar interaction in an atomic Bose Einstein condensate interferometer

Abstract

We study the role played by the magnetic dipole interaction in an atomic interferometer based on an alkali Bose-Einstein condensate with tunable scattering length. We tune the s-wave interaction to zero using a magnetic Feshbach resonance and measure the decoherence of the interferometer induced by the weak residual interaction between the magnetic dipoles of the atoms. We prove that with a proper choice of the scattering length it is possible to compensate for the dipolar interaction and extend the coherence time of the interferometer. We put in evidence the anisotropic character of the dipolar interaction by working with two different experimental configurations for which the minima of decoherence are achieved for a positive and a negative value of the scattering length, respectively. Our results are supported by a theoretical model we develop. This model indicates that the magnetic dipole interaction should not represent a serious source of decoherence in atom interferometers based on Bose-Einstein condensates.

4 pages, 3 figures

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• Observation of quantum droplets in a strongly dipolar Bose gas
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• Observation of an Efimov spectrum in an atomic system
• Strongly correlated gases of Rydberg-dressed atoms: quantum and classical dynamics
• Roton-type mode softening in a quantum gas with cavity-mediated long-range interactions
• Extreme tunability of interactions in a ${}^7$Li Bose-Einstein condensate
• Non-equilibrium quantum magnetism in a dipolar lattice gas
• Anderson localization in Bose-Einstein condensates
• Comparing and contrasting nuclei and cold atomic gases
• Non-Gaussianity as a signature of a quantum theory of gravity
• Mean-field regime of trapped dipolar Bose-Einstein condensates in one and two dimensions
• Control of dipolar relaxation in external fields
• Mesoscopic ensembles of polar bosons in triple-well potentials
• Dipolar Stabilization of an Attractive Bose Gas in a One Dimensional Lattice
• Tuning the dipole-dipole interaction in a quantum gas with a rotating magnetic field
• Coherent collapse of a dipolar Bose-Einstein condensate for different trap geometries
• Quantum simulation of $(1+1)$-dimensional U(1) gauge-Higgs model on a lattice by cold Bose gases
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• Spin relaxation and band excitation of a dipolar BEC in 2D optical lattices
• Faraday patterns in dipolar Bose-Einstein condensates
• Hybrid multi-site excitations in dipolar condensates in optical lattices
• Simulating quantum magnets with symmetric top molecules
• Stability of a BEC with Higher-order Interactions near a Feshbach Resonance
• Bound States and Universality in Layers of Cold Polar Molecules
• A dipolar self-induced bosonic Josephson junction
• Phase-slippage and self-trapping in a self-induced bosonic Josephson junction
• Collective excitation frequencies and stationary states of trapped dipolar Bose-Einstein condensates in the Thomas-Fermi regime
• Direct evaporative cooling of 39K atoms to Bose-Einstein condensation
• Matter-wave solitons supported by field-induced dipole-dipole repulsion with a spatially modulated strength
• Bose-Fermi mixtures of self-assembled filaments of fermionic polar molecules
• Faraday patterns in coupled one-dimensional dipolar condensates
• Stable periodic density waves in dipolar Bose-Einstein condensates trapped in optical lattices
• Elastic Multi-Body Interactions on a Lattice
• Fermi surface of a trapped dipolar Fermi gas
• Aligned dipolar Bose-Einstein condensate in a double-well potential: From cigar-shaped to pancake-shaped
• Rotational properties of dipolar Bose-Einstein condensates confined in anisotropic harmonic potentials
• Pinpointing Feshbach Resonances and Testing Efimov Universalities in ${}^{39}$K
• Observation of Weak Collapse in a Bose-Einstein Condensate
• Mean-field description of dipolar bosons in triple-well potentials
• Effects of magnetic dipole-dipole interactions in atomic Bose-Einstein condensates with tunable s-wave interactions
• Lattice solitons with quadrupolar intersite interactions
• Phase transition from straight into twisted vortex-lines in dipolar Bose-Einstein condensates
• Nonlinear localized modes in dipolar Bose-Einstein condensates in optical lattices
• Phase diagrams of the extended Bose-Hubbard model in one dimension by Monte-Carlo simulation with the help of a stochastic-series expansion
• Demonstration of the temporal matter-wave Talbot effect for trapped matter waves
• Hidden order in bosonic gases confined in one dimensional optical lattices
• Vortex patterns and the critical rotational frequency in rotating dipolar Bose-Einstein condensates
• Bright solitons in quasi-one dimensional dipolar condensates with spatially modulated interactions
• Solitons in dipolar Bose-Einstein condensates with trap and barrier potential
• Variational Bethe Ansatz approach for dipolar one-dimensional bosons
• Interferometry using Adiabatic Passage in Dilute Gas Bose-Einstein Condensates
• Observation of subdiffusive dynamic scaling in a driven and disordered Bose gas
• Parametric amplification of matter waves in dipolar spinor Bose-Einstein condensates
• Rabi Interferometry and Sensitive Measurement of the Casimir-Polder Force with Ultra-Cold Gases
• Strongly dipolar gases in a one-dimensional lattice: Bloch oscillations and matter-wave localization
• Magnetic dipolar interaction between hyperfine clock states in a planar alkali Bose gas
• An Effective Potential Theory for Transport Coefficients Across Coupling Regimes
• Spin Hall Effect in a Spinor Dipolar Bose-Einstein Condensate
• Variational approach for Bose-Einstein condensates in strongly disordered traps
• Effective dipole-dipole interactions in multilayered dipolar Bose-Einstein condensates
• High- and low-frequency phonon modes in dipolar quantum gases trapped in deep lattices
• Symmetry-breaking magnetization dynamics of spinor dipolar Bose-Einstein condensates
• Making vortices in dipolar spinor condensates via rapid adiabatic passage
• Persistent currents in dipolar Bose-Einstein condensates confined in annular potentials
• A robust and efficient numerical method to compute the dynamics of the rotating two-component dipolar Bose-Einstein condensates
• Transport of dipolar Bose-Einstein condensates in a one-dimensional optical lattice
• Testing collapse models with Bose-Einstein-Condensate interferometry
• Progress toward a zero-magnetic-field environment for ultracold-atom experiments
• Effects of neutral $Z^{\prime }$ boson in $B_s\to \varphi {\ell }^{+}{\ell }^{-}$ decay with polarized $\varphi$ and the unpolarized and polarized $CP$ violation asymmetry
• Measuring spin correlations in optical lattices using superlattice potentials
• Stability of a Fully Polarized Ultracold Fermi Gas near Zero-Crossing of a p-wave Feshbach Resonance
• The field-induced interaction between non-resonant magnetic dipoles
• Inducing spin-dependent tunneling to probe magnetic correlations in optical lattices
• The field induced magnetic dipolar interaction for general boundary conditions