TY - JOUR
T1 - Ultra-narrow inhomogeneous spectral distribution of telecom-wavelength vanadium centres in isotopically-enriched silicon carbide
AU - Cilibrizzi, Pasquale
AU - Arshad, Muhammad Junaid
AU - Benedikt, Tissot
AU - Son, Nguyen Tien
AU - Ivanov, Ivan G.
AU - Astner, Thomas
AU - Bekker, Phillpp
AU - Ghezellou, Misagh
AU - Ul-Hassan, Jawad
AU - White, Daniel
AU - Bekker, Christiaan
AU - Burkard, Guido
AU - Trupke, Michael
AU - Bonato, Cristian
N1 - Funding Information:
We thank Caspar van der Wal, Carmem Gilardoni, Roland Nagy, Margherita Mazzera, Erik Gauger, Yoann Altmann and Brian Gerardot for helpful discussions and comments on our manuscript. This work is supported by the European Commission project QuanTELCO (grant agreement No 862721; M.T., C. Bonato, G.B., N.T.S.), the Engineering and Physical Sciences Research Council (EP/S000550/1; C. Bonato), the Leverhulme Trust (RPG-2019-388; C. Bonato), the Austrian Research Promotion Agency project QSense4Power (FFG 877615; M. T.), the Swedish Research Council (VR:2020-05444; J.U.H.) and the Knut and Alice Wallenberg Foundation (KAW 2018.0071; J.U.H, N.T. S.).
Publisher Copyright:
© 2023, The Author(s).
PY - 2023/12/19
Y1 - 2023/12/19
N2 - Spin-active quantum emitters have emerged as a leading platform for quantum technologies. However, one of their major limitations is the large spread in optical emission frequencies, which typically extends over tens of GHz. Here, we investigate single V4+ vanadium centres in 4H-SiC, which feature telecom-wavelength emission and a coherent S=1/2 spin state. We perform spectroscopy on single emitters and report the observation of spin-dependent optical transitions, a key requirement for spin-photon interfaces. By engineering the isotopic composition of the SiC matrix, we reduce the inhomogeneous spectral distribution of different emitters down to 100 MHz, significantly smaller than any other single quantum emitter. Additionally, we tailor the dopant concentration to stabilise the telecom-wavelength V4+ charge state, thereby extending its lifetime by at least two orders of magnitude. These results bolster the prospects for single V emitters in SiC as material nodes in scalable telecom quantum networks.
AB - Spin-active quantum emitters have emerged as a leading platform for quantum technologies. However, one of their major limitations is the large spread in optical emission frequencies, which typically extends over tens of GHz. Here, we investigate single V4+ vanadium centres in 4H-SiC, which feature telecom-wavelength emission and a coherent S=1/2 spin state. We perform spectroscopy on single emitters and report the observation of spin-dependent optical transitions, a key requirement for spin-photon interfaces. By engineering the isotopic composition of the SiC matrix, we reduce the inhomogeneous spectral distribution of different emitters down to 100 MHz, significantly smaller than any other single quantum emitter. Additionally, we tailor the dopant concentration to stabilise the telecom-wavelength V4+ charge state, thereby extending its lifetime by at least two orders of magnitude. These results bolster the prospects for single V emitters in SiC as material nodes in scalable telecom quantum networks.
UR - http://www.scopus.com/inward/record.url?scp=85180215645&partnerID=8YFLogxK
U2 - 10.1038/s41467-023-43923-7
DO - 10.1038/s41467-023-43923-7
M3 - Article
C2 - 38114478
SN - 2041-1723
VL - 14
JO - Nature Communications
JF - Nature Communications
M1 - 8448
ER -