Laser Cooling of Molecular Anions

Abstract

We propose a scheme for laser cooling of negatively charged molecules. We briefly summarise the requirements for such laser cooling and we identify a number of potential candidates. A detailed computation study with C$\_2^{-}$, the most studied molecular anion, is carried out. Simulations of 3D laser cooling in a gas phase show that this molecule could be cooled down to below 1 mK in only a few tens of milliseconds, using standard lasers. Sisyphus cooling, where no photo-detachment process is present, as well as Doppler laser cooling of trapped C$\_2^{-}$, are also simulated. This cooling scheme has an impact on the study of cold molecules, molecular anions, charged particle sources and antimatter physics.

References in corpus (12)

• Cold and Ultracold Molecules: Science, Technology, and Applications
• Laser cooling of a diatomic molecule
• Magneto-optical trapping of diatomic molecules
• Laser cooling and slowing of CaF molecules
• Sisyphus Cooling of Electrically Trapped Polyatomic Molecules
• Formation and interactions of cold and ultracold molecules: new challenges for interdisciplinary physics
• N-body simulations of gravitational dynamics
• Magneto-optical trapping forces for atoms and molecules with complex level structures
• Challenges of laser-cooling molecular ions
• Photodetachment as destruction mechanism for CN- and C3N- anions in circumstellar envelopes
• Reactive collisions of trapped anions with ultracold atoms
• Theoretical Electronic and Rovibrational Studies for Anions of Interest to the DIBs

Cited by in corpus (24)

• Quantum control of molecular rotation
• Cold hybrid ion-atom systems
• CPT tests with the antihydrogen molecular ion
• Bound and continuum-embedded states of cyanopolyyne anions
• Sympathetic cooling of a trapped proton mediated by an LC circuit
• Ultracold anions for high-precision antihydrogen experiments
• Observation of Electric-Dipole Transitions in the Laser-Cooling Candidate Th${}^{-}$
• Rovibrational optical cooling of a molecular beam
• Laser-coolable AcOH${}^{+}$ ion for $\mathcal{C}\mathcal{P}$-violation searches
• Rovibrational quenching of C${}_2$-anions in collisions with He, Ne, and Ar atoms
• Spectroscopy and ion thermometry of C${}_2^{-}$ using laser-cooling transitions
• Cold reactive and non-reactive collisions of Li and Rb with C${}_2^{-}$: implications for hybrid trap experiments
• Predicting quasibound states of negative ions
• Vibrationally Resolved Inner-Shell Photoexcitation of the Molecular Anion C${}_2^{-}$
• Vibrational Quenching of CN- in Collisions with He and Ar
• Bimodal momentum distribution of laser-cooled atoms in optical lattices
• Investigating the electronic properties and structural features of MgH and of MgH${}^{-}$ anions
• Energy Levels and Transition Rates of Laser-Cooling Candidate Th^-
• Autodetachment of diatomic carbon anions from long-lived high-rotation quartet states
• Cold collisions of C${}_2^{-}$ anions with Li and Rb atoms in hybrid traps
• Bichromatic magneto-optical trapping for $J\to J,J-1$ configurations
• Unimolecular processes in diatomic carbon anions at high rotational excitation
• Adaptable platform for trapped cold electrons, hydrogen and lithium anions and cations
• Cold interactions and chemical reactions of linear polyatomic anions with alkali-metal and alkaline-earth-metal atoms