Zeeman-tuned rotational level-crossing spectroscopy in a diatomic free radical

Abstract

Rotational levels of molecular free radicals can be tuned to degeneracy using laboratory-scale magnetic fields. Because of their intrinsically narrow width, these level crossings of opposite-parity states have been proposed for use in the study of parity-violating interactions and other applications. We experimentally study a typical manifestation of this system using ${}^{138}$BaF. Using a Stark-mixing method for detection, we demonstrate level-crossing signals with spectral width as small as 6 kHz. We use our data to verify the predicted lineshapes, transition dipole moments, and Stark shifts, and to precisely determine molecular magnetic g-factors. Our results constitute an initial proof-of-concept for use of this system to study nuclear spin-dependent parity violating effects.

This version is updated in response to referee's comments, and includes a more substantive conclusion than the original version

References in corpus (5)

• Using Molecules to Measure Nuclear Spin-Dependent Parity Violation
• `Stückelberg interferometry' with ultracold molecules
• External field control of collective spin excitations in an optical lattice of ${}^2\Sigma$ molecules
• Relativistic study of the nuclear anapole moment effects in diatomic molecules
• An Easily Constructed, Tuning Free, Ultra-broadband Probe for NMR

Cited by in corpus (38)

• Search for New Physics with Atoms and Molecules
• Molecules cooled below the Doppler limit
• Ultracold molecules for measuring the electron's electric dipole moment
• Nonadiabatic Landau-Zener-Stückelberg-Majorana transitions, dynamics, and interference
• Magnetic trapping and coherent control of laser-cooled molecules
• Parity and Time-Reversal Violation in Atomic Systems
• Demonstration of a Sensitive Method to Measure Nuclear Spin-Dependent Parity Violation
• Laser cooled molecules
• An intense, cold, velocity-controlled molecular beam by frequency-chirped laser slowing
• Characteristics of a magneto-optical trap of molecules
• Parity-violating interactions of cosmic fields with atoms, molecules, and nuclei: Concepts and calculations for laboratory searches and extracting limits
• Limiting P-odd interactions of cosmic fields with electrons, protons and neutrons
• A buffer gas beam source for short, intense and slow molecular pulses
• Nuclear spin-dependent interactions: Searches for WIMP, Axion and Topological Defect Dark Matter, and Tests of Fundamental Symmetries
• Quantum control of molecules for fundamental physics
• Probing low-mass vector bosons with parity nonconservation and nuclear anapole moment measurements in atoms and molecules
• Prospects for a Narrow Line MOT in YO
• Measuring molecular parity nonconservation using nuclear magnetic resonance spectroscopy
• Three-dimensional Magneto-optical Trapping of Barium Monofluoride
• Spin-dependent exotic interactions
• Nuclear spin-dependent parity-violating effects in light polyatomic molecules
• The RbSr ${}^2{\Sigma }^{+}$ ground state investigated via spectroscopy of hot & ultracold molecules
• Measuring Nuclear Spin Dependent Parity Violation With Molecules: Experimental Methods and Analysis of Systematic Errors
• Doppler cooling of buffer-gas-cooled Barium monofluoride molecules
• High-resolution mid-infrared spectroscopy of buffer-gas-cooled methyltrioxorhenium molecules
• Control of Optical Transitions with Magnetic Fields in Weakly Bound Molecules
• Molecular Parity Nonconservation in Nuclear Spin Couplings
• Sisyphus Optical Lattice Decelerator
• High-resolution 'magic'-field spectroscopy on trapped polyatomic molecules
• Laser spectroscopy of cold molecules
• Parity-violating nuclear spin-rotation and NMR shielding tensors in tetrahedral molecules
• Electroweak Nuclear Properties from Single Molecular Ions in a Penning Trap
• High-resolution spectroscopy of barium monofluoride: Odd isotopologues, hyperfine structure and isotope shifts
• Magnetic hyperfine structure constants of ${}^{137}$BaF in the ${}^2{\Pi }_{1/2}$ and ${}^2{\Pi }_{3/2}$ excited states
• Nuclear-Spin Dependent Parity Violation in Optically Trapped Polyatomic Molecules
• Quantum thermodynamics in chiral two--level systems. The quantum stochastic resonance
• Mixing properties of room temperature patch-antenna receivers in a mid-infrared (9um) heterodyne system
• High-resolution spectroscopy on cold electrically trapped formaldehyde