@article{912050bdb7a649faba98f6bf5a3e7d4f,
title = "A Telecom O-Band Emitter in Diamond",
abstract = "Color centers in diamond are promising platforms for quantum technologies. Most color centers in diamond discovered thus far emit in the visible or near-infrared wavelength range, which are incompatible with long-distance fiber communication and unfavorable for imaging in biological tissues. Here, we report the experimental observation of a new color center that emits in the telecom O-band, which we observe in silicon-doped bulk single crystal diamonds and microdiamonds. Combining absorption and photoluminescence measurements, we identify a zero-phonon line at 1221 nm and phonon replicas separated by 42 meV. Using transient absorption spectroscopy, we measure an excited state lifetime of around 270 ps and observe a long-lived baseline that may arise from intersystem crossing to another spin manifold.",
keywords = "O-band, color center, diamond, optical spectroscopy, telecom emitter",
author = "Sounak Mukherjee and Zhang, {Zi Huai} and Oblinsky, {Daniel G.} and {de Vries}, {Mitchell O.} and Johnson, {Brett C.} and Gibson, {Brant C.} and Mayes, {Edwin L.H.} and Edmonds, {Andrew M.} and Nicola Palmer and Markham, {Matthew L.} and {\'A}d{\'a}m Gali and Gerg{\H o} Thiering and Adam Dalis and Timothy Dumm and Scholes, {Gregory D.} and Alastair Stacey and Philipp Reineck and {de Leon}, {Nathalie P.}",
note = "Funding Information: This work was primarily supported by the U.S. Department of Energy, Office of Science, National Quantum Information Science Research Centers, Co-design Center for Quantum Advantage (C2QA), under Contract Number DE-SC0012704. Ultrafast measurements and materials characterization were performed with support from the Air Force Office of Scientific Research under Grant No. FA9550-17-0158. This research was also supported by the Australian Research Council Center of Excellence for Nanoscale BioPhotonics (No. CE140100003). P.R. acknowledges funding through the RMIT Vice-Chancellor{\textquoteright}s Research Fellowship and ARC DECRA Fellowship scheme (No. DE200100279). M.d.V. acknowledges funding through the RMIT{\textquoteright}s Research Stipend Scholarship (RRSS-SC). The authors acknowledge the use of the RMIT Microscopy and Microanalysis Facility (RMMF) at RMIT University. {\'A}.G. acknowledges the support from the National Research, Development and Innovation Office of Hungary (NKFIH) for the National Excellence Program (Grant No. KKP129866), the Quantum Information National Laboratory (Grant No. 2022-2.1.1-NL-2022-00004), and the EU QuantERA II Sensextreme project as well as the EU H2020 FETOPEN project QuanTELCO (Grant No. 862721) and the EU HE EIC Pathfinder project QuMicro (Grant No. 101046911). G.T. was supported by the J{\'a}nos Bolyai Research Scholarship of the Hungarian Academy of Sciences. G.T. acknowledges the high-performance computational resources provided by KIF{\"U} (Governmental Agency for IT Development), an institute of Hungary. Publisher Copyright: {\textcopyright} 2023 American Chemical Society",
year = "2023",
month = apr,
day = "12",
doi = "10.1021/acs.nanolett.2c04608",
language = "English (US)",
volume = "23",
pages = "2557--2562",
journal = "Nano Letters",
issn = "1530-6984",
publisher = "American Chemical Society",
number = "7",
}