Coherent Excitation of the 6S1/2 to 5D3/2 Electric Quadrupole Transition in 138Ba+

Abstract

The electric dipole-forbidden, quadrupole 6S1/2 <-> 5D3/2 transition in Ba+ near 2051 nm, with a natural linewidth of 13 mHz, is attractive for potential observation of parity non-conservation, and also as a clock transition for a barium ion optical frequency standard. This transition also offers a direct means of populating the metastable 5D3/2 state to measure the nuclear magnetic octupole moment in the odd barium isotopes. Light from a diode-pumped, solid state Tm,Ho:YLF laser operating at 2051 nm is used to coherently drive this transition between resolved Zeeman levels in a single trapped 138Ba+ ion. The frequency of the laser is stabilized to a high finesse Fabry Perot cavity at 1025 nm after being frequency doubled. Rabi oscillations on this transition indicate a laser-ion coherence time of 3 ms, most likely limited by ambient magnetic field fluctuations.

arXiv comment5 pages, 5 figures

References in corpus (4)

• Manipulation and Detection of a Trapped Yb+ Ion Hyperfine Qubit
• Photoionization and Photoelectric Loading of Barium Ion Traps
• Precision measurement of the branching ratio in the 6P3/2 decay of BaII with a single trapped ion
• Nuclear magnetic octupole moment and the hyperfine structure of the $5D_{3/2,5/2}$ states of the Ba${}^{+}$ ion

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• Spectral Signatures of Vibronic Coupling in Trapped Cold Ionic Rydberg Systems
• Non-invasive mid-circuit measurement and reset on atomic qubits