| Autor: |
Antonov IO; Department of Physics and Astronomy, Northwestern University, Evanston, IL, USA., Stollenwerk PR; Department of Physics and Astronomy, Northwestern University, Evanston, IL, USA., Venkataramanababu S; Applied Physics program, Northwestern University, Evanston, IL, USA., de Lima Batista AP; Departamento de Química, Laboratório Computacional de Espectroscopia e Cinética, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto-SP, Brazil., de Oliveira-Filho AGS; Departamento de Química, Laboratório Computacional de Espectroscopia e Cinética, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto-SP, Brazil., Odom BC; Department of Physics and Astronomy, Northwestern University, Evanston, IL, USA. b-odom@northwestern.edu.; Applied Physics program, Northwestern University, Evanston, IL, USA. b-odom@northwestern.edu. |
| Abstrakt: |
Improved optical control of molecular quantum states promises new applications including chemistry in the quantum regime, precision tests of fundamental physics, and quantum information processing. While much work has sought to prepare ground state molecules, excited states are also of interest. Here, we demonstrate a broadband optical approach to pump trapped SiO + molecules into pure super rotor ensembles maintained for many minutes. Super rotor ensembles pumped up to rotational state N = 67, corresponding to the peak of a 9400 K distribution, had a narrow N spread comparable to that of a few-kelvin sample, and were used for spectroscopy of the previously unobserved C 2 Π state. Significant centrifugal distortion of super rotors pumped up to N = 230 allowed probing electronic structure of SiO + stretched far from its equilibrium bond length. |
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