Tunable room-temperature single-photon emission at telecom wavelengths from sp3 defects in carbon nanotubes
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Rice Univ., Houston, TX (United States)
- Tokyo Metropolitan Univ., Tokyo (Japan)
- National Institute of Advanced Industrial Science and Technology (AIST), Ibaraki (Japan)
Generating quantum light emitters that operate at room temperature and at telecom wavelengths remains a significant materials challenge. To achieve this goal requires light sources that emit in the near-infrared wavelength region and that, ideally, are tunable to allow desired output wavelengths to be accessed in a controllable manner. Here, we show that exciton localization at covalently introduced aryl sp3 defect sites in single-walled carbon nanotubes provides a route to room-temperature single-photon emission with ultrahigh single-photon purity (99%) and enhanced emission stability approaching the shot-noise limit. Moreover, we demonstrate that the inherent optical tunability of single-walled carbon nanotubes, present in their structural diversity, allows us to generate room-temperature single-photon emission spanning the entire telecom band. Furthermore, single-photon emission deep into the centre of the telecom C band (1.55 um) is achieved at the largest nanotube diameters we explore (0.936 nm).
- Research Organization:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Grant/Contract Number:
- AC36-08GO28308
- OSTI ID:
- 1379462
- Alternate ID(s):
- OSTI ID: 1406208
OSTI ID: 1392859
- Report Number(s):
- NREL/JA--5900-68252
- Journal Information:
- Nature Photonics, Journal Name: Nature Photonics Journal Issue: 9 Vol. 11; ISSN 1749-4885
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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