Fine-Structure Qubit Encoded in Metastable Strontium Trapped in an Optical Lattice

• URL: http://arxiv.org/abs/2401.11054v2
• Date: Thu, 25 Jan 2024 16:53:15 GMT
• Title: Fine-Structure Qubit Encoded in Metastable Strontium Trapped in an Optical Lattice
• Authors: S. Pucher, V. Kl\"usener, F. Spriestersbach, J. Geiger, A. Schindewolf, I. Bloch, S. Blatt
• Abstract summary: coherent control of the fine-structure qubit in neutral strontium atoms. Results pave the way for fast quantum information processors and highly tunable quantum simulators with two-electron atoms.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We demonstrate coherent control of the fine-structure qubit in neutral strontium atoms. This qubit is encoded in the metastable $^3\mathrm{P}_2$ and $^3\mathrm{P}_0$ states, coupled by a Raman transition. Using a magnetic quadrupole transition, we demonstrate coherent state-initialization of this THz qubit. We show Rabi oscillations with more than 60 coherent cycles and single-qubit rotations on the $\mu$s scale. With spin-echo, we demonstrate coherence times of tens of ms. Our results pave the way for fast quantum information processors and highly tunable quantum simulators with two-electron atoms.

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