| Autor: |
Dickerson CE; Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095, USA., Guo H; Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095, USA., Shin AJ; Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095, USA., Augenbraun BL; Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA., Caram JR; Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095, USA., Campbell WC; Department of Physics and Astronomy, University of California Los Angeles, Los Angeles, California 90095, USA., Alexandrova AN; Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095, USA. |
| Abstrakt: |
Laser induced electronic excitations that spontaneously emit photons and decay directly to the initial ground state ("optical cycling transitions") are used in quantum information and precision measurement for state initialization and readout. To extend this primarily atomic technique to large, organic compounds, we theoretically investigate optical cycling of alkaline earth phenoxides and their functionalized derivatives. We find that optical cycle leakage due to wave function mismatch is low in these species, and can be further suppressed by using chemical substitution to boost the electron-withdrawing strength of the aromatic molecular ligand through resonance and induction effects. This provides a straightforward way to use chemical functional groups to construct optical cycling moieties for laser cooling, state preparation, and quantum measurement. |
