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

Alisa Javadi; Dapeng Ding; Martin Hayhurst Appel; Sahand Mahmoodian; Matthias C. Löbl; Immo Söllner; Rüdiger Schott; Camille Papon; Tommaso Pregnolato; Søren Stobbe; Leonardo Midolo; Tim Schröder; Andreas D. Wieck; Arne Ludwig; Richard J. Warburton; Peter Lodahl

doi:10.1038/s41565-018-0091-5

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

Alisa Javadi, Dapeng Ding, Martin Hayhurst Appel, Sahand Mahmoodian, Matthias C. Löbl, Immo Söllner, Rüdiger Schott, Camille Papon, Tommaso Pregnolato, Søren Stobbe, Leonardo Midolo, Tim Schröder, Andreas D. Wieck, Arne Ludwig, Richard J. Warburton, Peter Lodahl

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Abstract

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.

Original language	English
Journal	Nature Nanotechnology
Volume	13
Issue number	5
Pages (from-to)	398-403
Number of pages	6
ISSN	1748-3387
DOIs	https://doi.org/10.1038/s41565-018-0091-5
Publication status	Published - 1 May 2018

Keywords

quant-ph
physics.atom-ph
physics.optics

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Javadi, A., Ding, D., Appel, M. H., Mahmoodian, S., Löbl, M. C., Söllner, I., Schott, R., Papon, C., Pregnolato, T., Stobbe, S., Midolo, L., Schröder, T., Wieck, A. D., Ludwig, A., Warburton, R. J., & Lodahl, P. (2018). Spin-photon interface and spin-controlled photon switching in a nanobeam waveguide. Nature Nanotechnology, 13(5), 398-403. https://doi.org/10.1038/s41565-018-0091-5

Javadi, A, Ding, D, Appel, MH, Mahmoodian, S, Löbl, MC, Söllner, I, Schott, R, Papon, C, Pregnolato, T, Stobbe, S, Midolo, L, Schröder, T, Wieck, AD, Ludwig, A, Warburton, RJ & Lodahl, P 2018, 'Spin-photon interface and spin-controlled photon switching in a nanobeam waveguide', Nature Nanotechnology, vol. 13, no. 5, pp. 398-403. https://doi.org/10.1038/s41565-018-0091-5

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title = "Spin-photon interface and spin-controlled photon switching in a nanobeam waveguide",

abstract = "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.",

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AU - Javadi, Alisa

AU - Ding, Dapeng

AU - Appel, Martin Hayhurst

AU - Mahmoodian, Sahand

AU - Löbl, Matthias C.

AU - Söllner, Immo

AU - Schott, Rüdiger

AU - Papon, Camille

AU - Pregnolato, Tommaso

AU - Stobbe, Søren

AU - Midolo, Leonardo

AU - Schröder, Tim

AU - Wieck, Andreas D.

AU - Ludwig, Arne

AU - Warburton, Richard J.

AU - Lodahl, Peter

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N2 - 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.

AB - 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.

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KW - physics.atom-ph

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JF - Nature Nanotechnology

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

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