Highly spin-polarized molecules via collisional microwave pumping

• URL: http://arxiv.org/abs/2404.07416v1
• Date: Thu, 11 Apr 2024 01:11:14 GMT
• Title: Highly spin-polarized molecules via collisional microwave pumping
• Authors: Rebekah Hermsmeier, Timur V. Tscherbul,
• Abstract summary: We propose a technique to produce cold spin-polarized molecules, in which rotationally excited states are first populated by coherent microwave excitation, and then allowed to spin-flip and relax via collisional quenching, which populates a single final spin state. We illustrate the high selectivity of the technique for $13$C$16$O molecules immersed in a cold buffer gas of helium atoms, achieving a high degree ($geq$95%) of nuclear spin polarization at 1 K.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We propose a general technique to produce cold spin-polarized molecules, in which rotationally excited states are first populated by coherent microwave excitation, and then allowed to spin-flip and relax via collisional quenching, which populates a single final spin state. We illustrate the high selectivity of the technique for $^{13}$C$^{16}$O molecules immersed in a cold buffer gas of helium atoms, achieving a high degree ($\geq$95\%) of nuclear spin polarization at 1 K.

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