Total control over ultracold interactions via electric and magnetic fields

Abstract

The scattering length is commonly used to characterize the strength of ultracold atomic interactions, since it is the leading parameter in the low-energy expansion of the scattering phase shift. Its value can be modified via a magnetic field, by using a Feshbach resonance. However, the effective range term, which is the second parameter in the phase shift expansion, determines the width of the resonance and gives rise to important properties of ultracold gases. Independent control over this parameter is not possible by using a magnetic field only. We demonstrate that a combination of magnetic and electric fields can be used to get independent control over both parameters, which leads to full control over elastic ultracold interactions.

4 pages, 3 figures

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Cited by in corpus (23)

• Feshbach Resonances in Ultracold Gases
• Low-density neutron matter
• Spatiotemporal engineering of matter-wave solitons in Bose-Einstein condensates
• Realization of a Resonant Fermi Gas with a Large Effective Range
• Quantum Monte Carlo approaches to nuclear and atomic physics
• An impurity in a Fermi sea on a narrow Feshbach resonance: A variational study of the polaronic and dimeronic branches
• Ultracold three-body collisions near overlapping Feshbach resonances
• Trimers in the resonant 2+1 fermionic problem on a narrow Feshbach resonance : Crossover from Efimovian to Hydrogenoid spectrum
• Crossover in the Efimov spectrum
• Shortcut to adiabatic control of soliton matter waves by tunable interaction
• Controlling magnetic Feshbach resonances in polar open-shell molecules with non-resonant light
• Feshbach resonances in ultracold gases
• Impact of Electric Fields on Highly Excited Rovibrational States of Polar Dimers
• s-Wave Scattering Resonances Induced by Dipolar Interactions of Polar Molecules
• Effects of Electric Fields on Heteronuclear Feshbach Resonances in Ultracold ${}^6\mathrm{Li}{-}^{87}\mathrm{Rb}$ Mixtures
• Efimov Trimers in a Harmonic Potential
• Phase separation in low-density neutron matter
• Magnetic control of ultra-cold ${}^6$Li and ${}^{174}$Yb(${}^3{P}_2$) atom mixtures with Feshbach resonances
• Experimental observation of the avoided crossing of two $S$-matrix resonance poles in an ultracold atom collider
• Spin-polarized low-density neutron matter
• Width and shift of Fano-Feshbach resonances for van der Waals interactions
• Efimov states with strong three-body losses
• Temporal fluctuation induced order in conventional superconductors