Ultracold high-spin $\Sigma$-state polar molecules for new physics searches

Abstract

We propose high-spin $\Sigma$-state polar molecules assembled from ultracold atoms to probe charge-parity violating physics beyond the Standard Model. We identify YbCr as a prime candidate to search for the electric dipole moment of the electron. We show that the combination of relativistic ytterbium and high-spin chromium, amenable to magneto-association, leads to molecules with easy-to-polarize parity doublets and large intramolecular electric fields. Based on \textit{ab initio} results for molecular constants, we predict a sensitivity of $\delta d_{\text{e}}=(6\times 10^{-31}/\sqrt{n_{\mathrm{day}}})e\mathrm{cm}$ via standard spin-precession measurements, we assess the experimental feasibility, and discuss potential extensions to more advanced quantum control as well as searches of the nuclear magnetic quadrupole moment. This work paves the way to next-generation searches for new physics with ultracold molecules in both the leptonic and hadronic sectors.

arXiv comment16 pages (9 main text and 7 supplemental material), 8 figures (4 in main and 4 in SM), 7 tables in SM

References in corpus (64)

• Feshbach Resonances in Ultracold Gases
• Quantum metrology with nonclassical states of atomic ensembles
• Search for New Physics with Atoms and Molecules
• Many-Body Physics with Individually-Controlled Rydberg Atoms
• Production of cold molecules via magnetically tunable Feshbach resonances
• Stimulated Raman adiabatic passage in physics, chemistry and beyond
• Quantum computing with atomic qubits and Rydberg interactions: Progress and challenges
• The origin of the matter-antimatter asymmetry
• Quantum computing with neutral atoms
• Electric Dipole Moments of the Atoms, Molecules, Nuclei and Particles
• Matter and Antimatter in the Universe
• Dipolar physics: A review of experiments with magnetic quantum gases
• The DIRAC code for relativistic molecular calculations
• A new bound on the electron's electric dipole moment
• An efficient implementation of two-component relativistic exact-decoupling methods for large molecules
• Two-color photoassociation spectroscopy of ytterbium atoms and the precise determinations of s-wave scattering lengths
• Ultracold molecules for measuring the electron's electric dipole moment
• Observation of Feshbach resonances in an ultracold gas of ${}^{52}$Cr
• Observation of Bose-Einstein Condensation of Dipolar Molecules
• Realizing spin squeezing with Rydberg interactions in a programmable optical clock
• On-Demand Entanglement of Molecules in a Reconfigurable Optical Tweezer Array
• Scalable spin squeezing in a dipolar Rydberg atom array
• Distributed quantum sensing with a mode-entangled network of spin-squeezed atomic states
• Quantum sensing with atomic, molecular, and optical platforms for fundamental physics
• Dipolar evaporation of reactive molecules to below the Fermi temperature
• Observation of Feshbach resonances between alkali and closed-shell atoms
• Fermionic quantum processing with programmable neutral atom arrays
• Control of dipolar relaxation in external fields
• Observation of magnetic solitons in two-component Bose-Einstein condensates
• Electron Electric Dipole Moment and Hyperfine Interaction Constants for ThO
• Rapid Cooling to Quantum Degeneracy in Dynamically Shaped Atom Traps
• Methods for measuring the electron EDM using ultracold YbF molecules
• Methods, Analysis, and the Treatment of Systematic Errors for the Electron Electric Dipole Moment Search in Thorium Monoxide
• Search for the electron electric dipole moment using $\Omega$-doublet levels in PbO${}^{\ast }$
• Laser cooling for quantum gases
• Quantum Control of Trapped Polyatomic Molecules for eEDM Searches
• Electron EDM searches based on alkali or alkaline earth bearing molecules
• Quantum mixtures of ultracold gases of neutral atoms
• Enhanced $\mathcal{P},\mathcal{T}$-violating nuclear magnetic quadrupole moment effects in laser-coolable molecules
• Core-Shell Magneto-Optical Trap for Alkaline-Earth-Metal-Like Atoms
• Precision measurements with polar molecules: the role of the black body radiation
• Enhanced effect of CP-violating nuclear magnetic quadrupole moment in HfF${}^{+}$ molecule
• Design and characterisation of a compact magnetic shield for ultracold atomic gas experiments
• Preparation and detection of states with simultaneous spin alignment and molecular orientation in PbO
• Electron electric dipole moment searches using clock transitions in ultracold molecules
• Diatomic molecules of alkali-metal and alkaline-earth-metal atoms: interaction potentials, dipole moments, and polarizabilities
• A laser cooling scheme for precision measurements using barium monofluoride (137Ba19F) molecules
• Magnetically tunable Feshbach resonances in Li+Er
• Ab initio properties of the ground-state polar and paramagnetic europium-alkali-metal-atom and europium-alkaline-earth-metal-atom molecules
• Prospects for ultracold polar and magnetic chromium-closed-shell-atom molecules
• Ultracold LiCr: a new pathway to quantum gases of paramagnetic polar molecules
• Molecular enhancement factors for P, T-violating eEDM in BaCH${}_3$ and YbCH${}_3$ symmetric top molecules
• Ultracold mercury-alkali molecules for electron electric dipole moment searches
• Quantum-Enhanced Metrology for Molecular Symmetry Violation using Decoherence-Free Subspaces
• Engineering field-insensitive molecular clock transitions for symmetry violation searches
• Double-degenerate Fermi mixtures of ${}^6$Li and ${}^{53}$Cr atoms
• Production of large Bose-Einstein condensates in a magnetic-shield-compatible hybrid trap
• Relativistic aspects of orbital and magnetic anisotropies in the chemical bonding and structure of lanthanide molecules
• Quantum chaos in Feshbach resonances of the ErYb system
• Prospects for measuring the electron's electric dipole moment with polyatomic molecules in an optical lattice
• Cooling All External Degrees of Freedom of Optically Trapped Chromium Atoms Using Gray Molasses
• Plane-selective manipulations of nuclear spin qubits in a three-dimensional optical tweezer array
• $\mathcal{P},\mathcal{T}$-odd effects in YbCu, YbAg and YbAu
• Spin--spin interaction and magnetic Feshbach resonances in collisions of high-spin atoms with closed-shell atoms