Spectroscopic observation of SU(N)-symmetric interactions in Sr orbital magnetism

Abstract

SU(N) symmetry can emerge in a quantum system with N single-particle spin states when spin is decoupled from inter-particle interactions. So far, only indirect evidence for this symmetry exists, and the scattering parameters remain largely unknown. Here we report the first spectroscopic observation of SU(N=10) symmetry in Sr-87 using the state-of-the-art measurement precision offered by an ultra-stable laser. By encoding the electronic orbital degree of freedom in two clock states, while keeping the system open to 10 nuclear spin sublevels, we probe the non-equilibrium two-orbital SU(N) magnetism via Ramsey spectroscopy of atoms confined in an array of two-dimensional optical traps. We study the spin-orbital quantum dynamics and determine all relevant interaction parameters. This work prepares for using alkaline-earth atoms as test-beds for iconic orbital models.

4 figures, 1 tables

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Cited by in corpus (36)

• Systematic evaluation of an atomic clock at 2e-18 total uncertainty
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• Ultracold Fermi Gases with Emergent SU(N) Symmetry
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• Quantum correlations and entanglement in far-from-equilibrium spin systems
• Observation of coherent multiorbital polarons in a two-dimensional Fermi gas
• Coherent magnon optics in a ferromagnetic spinor Bose-Einstein condensate
• Role of atoms in atomic gravitational-wave detectors
• Core-Shell Magneto-Optical Trap for Alkaline-Earth-Metal-Like Atoms
• Phase diagrams of one-dimensional half-filled two-orbital SU(N) cold fermions systems
• Quantum Monte Carlo simulation of thermodynamic properties of SU(2N) ultracold fermions in optical lattices
• State-dependent interactions in ultracold ${}^{174}$Yb probed by optical clock spectroscopy
• Variational Monte-Carlo investigation of SU($N$) Heisenberg chains
• Spiral spin textures of bosonic Mott insulator with SU(3) spin-orbit coupling
• Polarons and Molecules in a Fermi Gas with Orbital Feshbach Resonance
• Electric dipole matrix elements for the $6p{}^2{P}_J\to 7s{}^2{S}_{1/2}$ transition in atomic cesium
• Quantum engineering of atomic phase-shifts in optical clocks
• Flag manifold sigma-models: the 1/N-expansion and the anomaly two-form
• Exact diagonalization of $\mathrm{SU}(N)$ Heisenberg and AKLT chains using the full $\mathrm{SU}(N)$ symmetry
• Two-leg SU(2n) spin ladder: A low-energy effective field theory approach
• Relativistic calculations of $C_6$ and $C_8$ coefficients for strontium dimers
• Atomic properties of actinide ions with particle-hole configurations
• Quantum Defect Theory for Orbital Feshbach Resonance
• SU(N) Fermi liquid at finite temperature
• Exotic pairing in 1D spin-3/2 atomic gases with $SO(4)$ symmetry
• Interaction-induced exotic vortex states in an optical lattice clock with spin-orbit coupling
• Spin-gap spectroscopy in a bosonic flux ladder
• Sum rules for spin-$1/2$ quantum gases in states with well-defined spins: spin-independent interactions and spin-dependent external fields
• Projective symmetry group classification of $Z_3$ parafermion spin liquids on a honeycomb lattice
• Stabilization of the chiral phase of the SU($6m$) Heisenberg model on the honeycomb lattice with $m$ particles per site for $m$ larger than 1
• The Symplectic Fermi Liquid and its realization in cold atomic systems
• Cooperation of different exchange mechanisms in confined magnetic systems
• Path Integral Monte Carlo study of particles obeying quantum mechanics and classical statistics
• Relativistic many-body calculation of energies, lifetimes, polarizabilities, blackbody radiative shift and hyperfine constants in Lu2+
• Cyclotron Dynamics of a Kondo Singlet in a Spin-Orbit-Coupled Alkaline-Earth Atomic Gas
• Are degenerate groundstates induced by spontaneous symmetry breakings in quantum phase transitions?