Doubly-ionized lanthanum as a qubit candidate for quantum networks

• URL: http://arxiv.org/abs/2109.01978v1
• Date: Sun, 5 Sep 2021 03:12:30 GMT
• Title: Doubly-ionized lanthanum as a qubit candidate for quantum networks
• Authors: S. Olmschenk
• Abstract summary: We propose doubly-ionized lanthanum as a possible qubit candidate for quantum networks. Transitions between the lowest levels in the atom are in the infrared, enabling a direct matter-light interface amenable to long-distance quantum communication. The rich hyperfine structure of the ion may allow for a qubit stored in magnetic-field insensitive states, as well as protocols for atom-photon entanglement.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We propose doubly-ionized lanthanum (La$^{2+}$) as a possible qubit candidate for quantum networks. Transitions between the lowest levels in the atom are in the infrared, enabling a direct matter-light interface amenable to long-distance quantum communication. These transitions could also be used to directly laser-cool trapped La$^{2+}$ ions. The rich hyperfine structure of the ion may allow for a qubit stored in magnetic-field insensitive states, as well as protocols for atom-photon entanglement.

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