Spin-controlled generation of indistinguishable and distinguishable photons from silicon vacancy centres in silicon carbide

Naoya Morioka (), Charles Babin, Roland Nagy, Izel Gediz, Erik Hesselmeier, Di Liu, Matthew Joliffe, Matthias Niethammer, Durga Dasari, Vadim Vorobyov, Roman Kolesov, Rainer Stöhr, Jawad Ul-Hassan, Nguyen Tien Son, Takeshi Ohshima, Péter Udvarhelyi, Gergő Thiering, Adam Gali, Jörg Wrachtrup and Florian Kaiser ()
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Naoya Morioka: University of Stuttgart and Institute for Quantum Science and Technology IQST
Charles Babin: University of Stuttgart and Institute for Quantum Science and Technology IQST
Roland Nagy: University of Stuttgart and Institute for Quantum Science and Technology IQST
Izel Gediz: University of Stuttgart and Institute for Quantum Science and Technology IQST
Erik Hesselmeier: University of Stuttgart and Institute for Quantum Science and Technology IQST
Di Liu: University of Stuttgart and Institute for Quantum Science and Technology IQST
Matthew Joliffe: University of Stuttgart and Institute for Quantum Science and Technology IQST
Matthias Niethammer: University of Stuttgart and Institute for Quantum Science and Technology IQST
Durga Dasari: University of Stuttgart and Institute for Quantum Science and Technology IQST
Vadim Vorobyov: University of Stuttgart and Institute for Quantum Science and Technology IQST
Roman Kolesov: University of Stuttgart and Institute for Quantum Science and Technology IQST
Rainer Stöhr: University of Stuttgart and Institute for Quantum Science and Technology IQST
Jawad Ul-Hassan: Linköping University
Nguyen Tien Son: Linköping University
Takeshi Ohshima: National Institutes for Quantum and Radiological Science and Technology
Péter Udvarhelyi: Eötvös University
Gergő Thiering: Wigner Research Centre for Physics
Adam Gali: Wigner Research Centre for Physics
Jörg Wrachtrup: University of Stuttgart and Institute for Quantum Science and Technology IQST
Florian Kaiser: University of Stuttgart and Institute for Quantum Science and Technology IQST

Nature Communications, 2020, vol. 11, issue 1, 1-8

Abstract: Abstract Quantum systems combining indistinguishable photon generation and spin-based quantum information processing are essential for remote quantum applications and networking. However, identification of suitable systems in scalable platforms remains a challenge. Here, we investigate the silicon vacancy centre in silicon carbide and demonstrate controlled emission of indistinguishable and distinguishable photons via coherent spin manipulation. Using strong off-resonant excitation and collecting zero-phonon line photons, we show a two-photon interference contrast close to 90% in Hong-Ou-Mandel type experiments. Further, we exploit the system’s intimate spin-photon relation to spin-control the colour and indistinguishability of consecutively emitted photons. Our results provide a deep insight into the system’s spin-phonon-photon physics and underline the potential of the industrially compatible silicon carbide platform for measurement-based entanglement distribution and photonic cluster state generation. Additional coupling to quantum registers based on individual nuclear spins would further allow for high-level network-relevant quantum information processing, such as error correction and entanglement purification.

Date: 2020
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DOI: 10.1038/s41467-020-16330-5

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