| Title |
Golden ratio gain enhancement in coherently coupled parametric processes |
| Authors |
Jedrkiewicz, Ottavia ; Gatti, Alessandra ; Brambilla, Enrico ; Levenius, Martin ; Tamošauskas, Gintaras ; Gallo, Katia |
| DOI |
10.1038/s41598-018-30014-7 |
| Full Text |
|
| Is Part of |
Scientific reports.. London : Springer Nature. 2018, vol. 8, art no 11616, p. 1-9.. eISSN 2045-2322 |
| Keywords [eng] |
nonlinear optics ; photonic crystals ; photonic devices |
| Abstract [eng] |
Nonlinear optical processes are an essential tool in modern optics, with a broad spectrum of applications, including signal processing, frequency conversion, spectroscopy and quantum optics. Ordinary parametric devices nevertheless still suffer from relatively low gains and wide spectral emission. Here we demonstrate a unique configuration for phase-matching multiple nonlinear processes in a monolithic 2D nonlinear photonic crystal, resulting in the coherent parametric emission of four signal and idler modes, featuring an exponential gain enhancement equal to the Golden Ratio. The results indicate a new route towards compact high-brightness and coherent sources for multi-photon generation, manipulation and entanglement, overcoming limitations of conventional parametric devices. |
| Published |
London : Springer Nature |
| Type |
Journal article |
| Language |
English |
| Publication date |
2018 |
