Device-independent key distribution between trapped-ion quantum network nodes

Thesis

Hybrid quantum systems, combining the advantages of matter-based carriers of quantum information with those of light, have potential applications across many domains of quantum science and technology. In this thesis, we present a high-fidelity, high-rate interface between trapped ions and polarisation-encoded photonic qubits, based on the spontaneous emission of 422 nm photons from ⁸⁸Sr⁺, entangled in polarisation with the resulting electronic state of the ion.

We show that photons...

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Authors: Nadlinger, DP

• DOI: 10.5287/ora-nzvzddey8
• Type of award: DPhil
• Level of award: Doctoral
• Awarding institution: University of Oxford
• Language: English
• Subjects: Physics; Quantum theory; Quantum entanglement; experimental physics