OH hyperfine ground state: From precision measurement to molecular qubits
نویسندگان
چکیده
We perform precision microwave spectroscopy—aided by Stark deceleration—to reveal the low-magneticfield behavior of OH in its 2 3/2 rovibronic ground state, identifying two field-insensitive hyperfine transitions suitable as qubits and determining a differential Landé g factor of 1.267 5 10−3 between opposite-parity components of the 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 F= ±1 satellite-line frequencies, yielding 1 720 529 887 10 Hz and 1 612 230 825 15 Hz.
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