Tuning interactions between static-field-shielded polar molecules with microwaves

• URL: http://arxiv.org/abs/2602.03225v1
• Date: Tue, 03 Feb 2026 07:52:54 GMT
• Title: Tuning interactions between static-field-shielded polar molecules with microwaves
• Abstract summary: We propose a method to tune the interactions between static-field-shielded molecules by applying a microwave field.<n>We find that both the s-wave scattering length and the dipole length can be widely tuned by changing the parameters of the microwave field.
• Score: 0.7883722807601674
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The ability to tune interparticle interactions is one of the main advantages of using ultracold quantum gases for quantum simulation of many-body physics. Current experiments with ultracold polar molecules employ shielding with microwave or static electric fields to prevent destructive collisional losses. The interaction potential of microwave-shielded molecules can be tuned by using microwaves of two different polarisations, while for static-field-shielded molecules the tunability of interactions is more limited and depends on the particular species. In this work, we propose a general method to tune the interactions between static-field-shielded molecules by applying a microwave field. We carry out coupled-channel scattering calculations in a field-dressed basis set to determine loss rate coefficients and scattering lengths. We find that both the s-wave scattering length and the dipole length can be widely tuned by changing the parameters of the microwave field, while maintaining strong suppression of lossy collisions.

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