Journal
SCIENCE ADVANCES
Volume 4, Issue 3, Pages -Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.aar3580
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Funding
- Singapore National Research Foundation through a Singapore National Research Foundation fellowship grant [NRF-NRFF2015-03]
- Singapore National Research Foundation through Competitive Research Program (CRP award) [NRF-CRP14-2014-02]
- Singapore Ministry of Education [RG176/15, MOE2016-T2-2-077, MOE2011-T3-1-005]
- A*Star QTE program
- Nanyang Technological University [M4081441]
- U.S. Air Force [FA2386-17-1-4064]
- Office of Naval Research Global [N62909-18-1-2025]
- National Research Development and Innovation Office of Hungary within the Quantum Technology National Excellence Program [2017-1.2.1-NKP-2017-00001]
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On-demand, single-photon emitters (SPEs) play a key role across a broad range of quantum technologies. In quantum networks and quantum key distribution protocols, where photons are used as flying qubits, telecom wavelength operation is preferred because of the reduced fiber loss. However, despite the tremendous efforts to develop various triggered SPE platforms, a robust source of triggered SPEs operating at room temperature and the telecom wavelength is still missing. We report a triggered, optically stable, room temperature solid-state SPE operating at telecom wavelengths. The emitters exhibit high photon purity (similar to 5% multiphoton events) and a record-high brightness of similar to 1.5 MHz. The emission is attributed to localized defects in a gallium nitride (GaN) crystal. The high-performance SPEs embedded in a technologically mature semiconductor are promising for on-chip quantum simulators and practical quantum communication technologies.
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