Open AccessSuper-Poissonian Light Statistics from Individual Silicon Vacancy Centers Coupled to a Laser-Written Diamond Waveguide
Author(s) -
Maximilian Koch,
Michael Hoese,
Vibhav Bharadwaj,
Johannes Lang,
J. P. Hadden,
Roberta Ramponi,
Fedor Jelezko,
Shane M. Eaton,
Alexander Kubanek
Publication year - 2022
Publication title -
acs photonics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.735
H-Index - 89
ISSN - 2330-4022
DOI - 10.1021/acsphotonics.2c00774
Subject(s) - photonics , physics , optics , laser , optoelectronics , photon , quantum optics , waveguide , materials science
Modifying light fields at the single-photon level is a key challenge for upcoming quantum technologies and can be realized in a scalable manner through integrated quantum photonics. Laser-written diamond photonics offers 3D fabrication capabilities and large mode-field diameters matched to fiber optic technology, though limiting the cooperativity at the single-emitter level. To realize large coupling efficiencies, we combine excitation of single shallow-implanted silicon vacancy centers via high numerical aperture optics with detection assisted by laser-written type-II waveguides. We demonstrate single-emitter extinction measurements with a cooperativity of 0.0050 and a relative beta factor of 13%. The transmission of resonant photons reveals single-photon subtraction from a quasi-coherent field resulting in super-Poissonian light statistics. Our architecture enables light field engineering in an integrated design on the single quantum level although the intrinsic cooperativity is low. Laser-written structures can be fabricated in three dimensions and with a natural connectivity to optical fiber arrays.