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OH hyperfine ground state: from precision measurement to molecular qubits

Benjamin L. Lev·Edmund R. Meyer·Eric R. Hudson·Brian C. Sawyer·John L. Bohn·Jun Ye
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Abstract

We perform precision microwave spectroscopy--aided by Stark deceleration--to reveal the low magnetic field behavior of OH in its ^2Π_{3/2} ro-vibronic ground state, identifying two field-insensitive hyperfine transitions suitable as qubits and determining a differential Lande g-factor of 1.267(5)\times10^{-3} between opposite parity components of the Λ-doublet. The data are successfully modeled with an effective hyperfine Zeeman Hamiltonian, which we use to make a tenfold improvement of the magnetically sensitive, astrophysically important ΔF=\pm1 satellite-line frequencies, yielding 1720529887(10) Hz and 1612230825(15) Hz.

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Benjamin L. Lev, Edmund R. Meyer, Eric R. Hudson, Brian C. Sawyer, John L. Bohn, Jun Ye. 2006-08-18. OH hyperfine ground state: from precision measurement to molecular qubits. https://doi.org/10.1103/physreva.74.061402

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