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Q: Fachverband Quantenoptik und Photonik
Q 44: Quantum Information II
Q 44.1: Vortrag
Donnerstag, 14. März 2024, 11:00–11:15, HS 1199
A fine structure qubit encoded in metastable strontium trapped in an optical lattice — •Sebastian Pucher1,2, Valentin Klüsener1,2, Jan Geiger1,2, Felix Spriestersbach1,2, Immanuel Bloch1,2,3, and Sebastian Blatt1,2,3 — 1Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Straße 1, 85748 Garching, Germany — 2Munich Center for Quantum Science and Technology, 80799 München, Germany — 3Fakultät für Physik, Ludwig-Maximilians-Universität München, 80799 München, Germany
The development of scalable, high-fidelity qubits is a key ongoing research challenge in quantum information science, with neutral atoms trapped in optical lattices being a promising candidate. Here, we present spectroscopy of a new Raman qubit using long-lived metastable states in Sr. This architecture enables fast single- and two-qubit gates. We coherently transfer the atoms from the ground state to the metastable 3P2 state and couple this state to the 3P0 state using a two-photon Raman transition. We demonstrate high-fidelity Rabi oscillations of atoms trapped in an optical lattice and study the coherence times in our system. This work establishes metastable Sr as a promising candidate for realizing quantum computing.
Keywords: optical lattice; strontium; fine structure qubit