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arXiv · 2006.15422

A coherent spin-photon interface with waveguide induced cycling transitions

Martin Hayhurst Appel·Alexey Tiranov·Alisa Javadi·Matthias Christian Löbl·Ying Wang·Sven Scholz·Andreas Dirk Wieck·Arne Ludwig·Richard John Warburton·Peter Lodahl
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Abstract

Solid-state quantum dots are promising candidates for efficient light-matter interfaces connecting internal spin degrees of freedom to the states of emitted photons. However, selection rules prevent the combination of efficient spin control and optical cyclicity in this platform. By utilizing a photonic crystal waveguide we here experimentally demonstrate optical cyclicity up to $\approx15$ through photonic state engineering while achieving high fidelity spin initialization and coherent optical spin control. These capabilities pave the way towards scalable multi-photon entanglement generation and on-chip spin-photon gates.

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Martin Hayhurst Appel, Alexey Tiranov, Alisa Javadi, Matthias Christian Löbl, Ying Wang, Sven Scholz, Andreas Dirk Wieck, Arne Ludwig, Richard John Warburton, Peter Lodahl. 2020-06-27. A coherent spin-photon interface with waveguide induced cycling transitions. https://doi.org/10.1103/physrevlett.126.013602

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