Dressed-State Spectroscopy and Magic Trapping of Microwave-Shielded NaCs Molecules

Abstract

We report on the optical polarizability of microwave-shielded ultracold NaCs molecules in an optical dipole trap. While dressing a pair of rotational states with a microwave field, we observe a marked dependence of the optical polarizability on the intensity and detuning of the dressing field. To precisely characterize differential energy shifts between dressed rotational states, we establish dressed-state spectroscopy. For strong dressing fields, we find that a magic rotational transition can be engineered and demonstrate its insensitivity to laser intensity fluctuations. The results of this work have direct relevance for evaporative cooling and the recent demonstration of molecular Bose-Einstein condensates [Bigagli, et al., Nature (2024)] and may open a door to precision microwave spectroscopy in interacting many-body systems of microwave-shielded molecules.

5 pages, 4 figures

References in corpus (35)

• Realizing a lattice spin model with polar molecules
• Tunable Superfluidity and Quantum Magnetism with Ultracold Polar Molecules
• Extended Bose-Hubbard Models with Ultracold Magnetic Atoms
• Cold polar molecules in 2D traps: Tailoring interactions with external fields for novel quantum phases
• Stable Topological Superfluid Phase of Ultracold Polar Fermionic Molecules
• Evaporation of microwave-shielded polar molecules to quantum degeneracy
• Observation of Bose-Einstein Condensation of Dipolar Molecules
• On-Demand Entanglement of Molecules in a Reconfigurable Optical Tweezer Array
• Microwave shielding of ultracold polar molecules
• Assembly of a rovibrational ground state molecule in an optical tweezer
• Universal coherence protection in a solid-state spin qubit
• Repulsive shield between polar molecules
• Probing site-resolved correlations in a spin system of ultracold molecules
• Controlling the scattering length of ultracold dipolar molecules
• Anisotropic Polarizability of Ultracold Polar ${}^{40}$K${}^{87}$Rb Molecules
• A Dressed Spin Qubit in Silicon
• Rotational Coherence Times of Polar Molecules in Optical Tweezers
• Collisionally Stable Gas of Bosonic Dipolar Ground State Molecules
• Tunable itinerant spin dynamics with polar molecules
• Ultracold Gas of Dipolar NaCs Ground State Molecules
• Microwave shielding of bosonic NaRb molecules
• Field-linked resonances of polar molecules
• Resonant dipolar collisions of ultracold molecules induced by microwave dressing
• Reactions Between Layer-Resolved Molecules Mediated by Dipolar Exchange
• Enhanced quantum control of individual ultracold molecules using optical tweezer arrays
• Tune-out and magic wavelengths for ground-state ${}^{23}$Na${}^{40}$K molecules
• Seconds-scale coherence on nuclear spin transitions of ultracold polar molecules in 3D optical lattices
• Controlling the ac Stark effect of RbCs with dc electric and magnetic fields
• Overlapping Bose-Einstein Condensates of ${}^{23}$Na and ${}^{133}$Cs
• A High Phase-Space Density Gas of NaCs Feshbach Molecules
• Elliptical polarization for molecular Stark shift compensation in deep optical traps
• Spectroscopy of dipolar fermions in 2D pancakes and 3D lattices
• Efficient Pathway to NaCs Ground State Molecules
• Anisotropic Polarizability of Ultracold Ground-state ${}^{23}$Na${}^{87}$Rb Molecules
• A planar cloverleaf antenna for the creation of circularly polarized microwave fields

Cited by in corpus (2)

• Three-Body Recombination of Ultracold Microwave-Shielded Polar Molecules
• Strongly dipolar molecular Bose-Einstein condensates: From few- to many-body physics