Precision Measurement of Spin-Dependent Dipolar Splitting in ${}^6$Li p-Wave Feshbach Resonances

Abstract

The magnetic dipolar splitting of a p-wave Feshbach resonance is governed by the spin-orbital configuration of the valence electrons in the triplet molecular state. We perform high-resolution trap loss spectroscopy on ultracold 6Li atoms to resolve this splitting with sub-milligauss precision. By comparing spin-polarized (|mS| = 1) and spin-mixture (mS = 0) configurations of the triplet state, we observe a clear spin-dependent reversal in the splitting structure, confirmed via momentumresolved absorption imaging. This behavior directly reflects the interplay between electron spin projection mS and orbital angular momentum ml in the molecular states. Our results provide a stringent benchmark for dipole-dipole interaction models and lay the groundwork for controlling the pairing in p-wave superfluid systems.

References in corpus (17)

• Resonantly-paired fermionic superfluids
• Quantum Computation Using Vortices and Majorana Zero Modes of a $p_x$ + $i{p}_y$ Superfluid of Fermionic Cold Atoms
• p-wave Feshbach molecules
• Anisotropic Fermi Superfluid via p-wave Feshbach Resonance
• Feshbach resonances, weakly bound molecular states and coupled-channel potentials for cesium at high magnetic fields
• Collisional Properties of p-Wave Feshbach Molecules
• Binding Energies of 6Li p-wave Feshbach Molecules
• Three fully polarized fermions close to a p-wave Feshbach resonance
• Fermion Superfluids of Non-Zero Orbital Angular Momentum near Resonance
• Observation of "broad" d-wave Feshbach resonances with a triplet structure
• Two-body relaxation in a Fermi gas at a p-wave Feshbach resonance
• p-Wave superfluid and phase separation in atomic Bose-Fermi mixture
• Observation of broad p-wave Feshbach resonances in ultracold ${}^{85}$Rb-${}^{87}$Rb mixtures
• Creation of p-wave Feshbach molecules in the selected angular momentum states using an optical lattice
• Universality of internal correlations of strongly interacting p-wave fermions in one-dimensional geometry
• Characterization of the magnetic field through the three-body loss near a narrow Feshbach resonance
• Rotating ground states of a one-dimensional spin-polarized gas of fermionic atoms with attractive p-wave interactions on a mesoscopic ring