Spin-photon interface and spin-controlled photon switching in a nanobeam waveguide

Javadi, Alisa and Ding, Dapeng and Appel, Martin Hayhurst and Mahmoodian, Sahand and Lobl, Matthias Christian and Sollner, Immo and Schott, Ruediger and Papon, Camille and Pregnolato, Tommaso and Stobbe, Soren and Midolo, Leonardo and Schroder, Tim and Wieck, Andreas Dirk and Ludwig, Arne and Warburton, Richard John and Lodahl, Peter. (2018) Spin-photon interface and spin-controlled photon switching in a nanobeam waveguide. Nature Nanotechnology, 13 (5). pp. 398-403.

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Official URL: https://edoc.unibas.ch/68121/

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The spin of an electron is a promising memory state and qubit. Connecting spin states that are spatially far apart will enable quantum nodes and quantum networks based on the electron spin. Towards this goal, an integrated spin–photon interface would be a major leap forward as it combines the memory capability of a single spin with the efficient transfer of information by photons. Here, we demonstrate such an efficient and optically programmable interface between the spin of an electron in a quantum dot and photons in a nanophotonic waveguide. The spin can be deterministically prepared in the ground state with a fidelity of up to 96%. Subsequently, the system is used to implement a single-spin photonic switch, in which the spin state of the electron directs the flow of photons through the waveguide. The spin–photon interface may enable on-chip photon–photon gates, single-photon transistors and the efficient generation of a photonic cluster state.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Experimental Physics (Warburton)
UniBasel Contributors:Warburton, Richard J and Javadi, Alisa and Löbl, Matthias and Söllner, Immo
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Nature Publishing Group
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:10 Apr 2019 09:34
Deposited On:10 Apr 2019 09:34

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