This publisher’s note announces a typographical correction in the author listing of Optica 7 , 135 ( 2020 ) OPTIC8 2334-2536 10.1364/OPTICA.7.000135 .

Over the past decade, remarkable advances have been realized in chip-based nonlinear photonic devices for classical and quantum applications in the near- and mid-infrared regimes. However, few demonstrations have been realized in the visible and near-visible regimes, primarily due to the large normal material group-velocity dispersion (GVD) that makes it challenging to phase match third-order parametric processes. In this paper, we show that exploiting dispersion engineering of higher-order waveguide modes provides waveguide dispersion that allows for small or anomalous GVD in the visible and near-visible regimes and phase matching of four-wave mixing processes. We illustrate the power of this concept by demonstrating in silicon nitride microresonators a near-visible mode-locked Kerr frequency comb and a narrowband photon-pair source compatible with Rb transitions. These realizations extend applications of nonlinear photonics towards the visible and near-visible regimes for applications in time and frequency metrology, spectral calibration, quantum information, and biomedical applications.

We experimentally demonstrate soliton mode-locked Kerr comb generation at near-visible wavelengths in a silicon nitride microresonator. We achieve the shortest wavelength to-date for mode-locked Kerr combs through dispersion engineering of a higher-order mode. © 2019 The Author(s)

Yun Zhao, Xingchen ji, 2 Bok Young Kim, Prathamesh S. Donvalkar, 4 Jae K. Jang, Chaitanya Joshi, 4 Mengjie Yu, 3 Chaitali Joshi, 4 Renato R. Domeneguetti, Felippe A.S. Barbosa, Paulo Nussenzveig, Yoshitomo Okawachi, Michal Lipson, and Alexander L. Gaeta ∗ Department of Electrical Engineering, Columbia University, New York, NY 10027, USA School of Electrical and Computer Engineering, Cornell University, Ithaca, NY 14853, USA Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY 10027, USA School of Applied and Engineering Physics, Cornell University, Ithaca, NY 14853, USA Instituto de Fisica, Universidade de So Paulo, P.O. Box 66318, So Paulo 05315-970, Brazil (Dated: July 11, 2019)

We demonstrate a silicon-chip-based narrow-band photon-pair source in the near-visible regime that is compatible with Rb-based quantum memories. We also derive a model that describes the photon spectrum incorporating dispersion and pump detuning.

We demonstrate a 446.5 nm GaN semiconductor laser with sub-MHz linewidth. The linewidth reduction is achieved by locking the laser to a magnesium fluoride whispering gallery mode resonator characterized with 109 quality factor. Self-injection locking ensures single longitudinal mode operation of the laser.

We demonstrate a large effective χ (2) in a rubidium-filled photonic bandgap fiber by an spontaneous parametric down conversion process. This system can be used for the coherent photon conversion scheme in quantum information processing.

We demonstrate frequency comb generation in the visible optical spectrum via excitation of higher-order modes in silicon nitride microresonators. Anomalous group-velocity dispersion from the higher-order mode allows for broadband comb generation spanning 45 THz.

We demonstrate a silicon-based narrow-band, correlated photon source that can be tuned continuously over 18 THz and precisely to the hyperfine transitions of the Rb D1 line.

We demonstrate telecom-to-near-visible frequency conversion, spanning over 181 THz (734 nm) via Bragg scattering four-wave mixing in a Rb vapor cell with a 0.15 % energy conversion efficiency at 1 mW pump power.

Using a diamond scheme in warm Rb-vapor, we generate quantum-correlated photonpairs by spontaneous four-wave mixing. Using a Rb-filled photonic-band gap fiber, this system could achieve pair generation efficiencies of 10(-3) pairs/input photon.

We demonstrate high optical depths of > 50 lasting over 100 minutes in a Rubidium filled PBGF using an off-resonant CW laser beam, which enables straightforward measurement of cross-phase modulation at the single photon level.

We demonstrate frequency translation of a weak signal beam with 21% efficiency in Rb vapor confined to a hollow core photonic band-gap fiber via Bragg scattering by four-wave mixing using microwatt level pump beams.