469 citations · 1.3k across the 8 of their papers we have counts for
7 papers
Quantum-enhanced second harmonic generation beyond the photon pairs regime
Thomas Dickinson, Ivi Afxenti, Giedre Astrauskaite +8
Two-photon processes are crucial in applications like microscopy and microfabrication, but their low cross-section requires intense illumination and limits, e.g., the penetration d…
Polarization Purity and Dispersion Characteristics of Nested Antiresonant Nodeless Hollow-Core Optical Fiber at Near- and Short-wave-IR Wavelengths for Quantum Communications
Ivi Afxenti, Lijun Yu, Taylor Shields +5
Advancements in quantum communication and sensing require improved optical transmission that ensures excellent state purity and reduced losses. While free-space optical communicati…
Controlling hybrid nonlinearities in transparent conducting oxides via two-colour excitation
M. Clerici, N. Kinsey, C. DeVault +8
Nanophotonics and metamaterials have revolutionised the way we think about optical space (epsilon, mu), enabling us to engineer the refractive index almost at will, to confine ligh…
Enhanced nonlinear refractive index in epsilon-near-zero materials
L. Caspani, R. P. M. Kaipurath, M. Clerici +9
New propagation regimes for light arise from the ability to tune the dielectric permittivity to extremely low values. Here we demonstrate a universal approach based on the low line…
Optically induced metal-to-dielectric transition in Epsilon-Near-Zero metamaterials
R. M. Kaipurath, M. Pietrzyk, L. Caspani +6
Epsilon-Near-Zero materials exhibit a transition in the real part of the dielectric permittivity from positive to negative value as a function of wavelength. Here we study metal-di…
Analogue Gravity and ultrashort laser pulse filamentation
D. Faccio, S. Cacciatori, V. Gorini +5
Ultrashort laser pulse filaments in dispersive nonlinear Kerr media induce a moving refractive index perturbation which modifies the space-time geometry as seen by co-propagating l…
Spatiotemporal Amplitude and Phase Retrieval of Bessel-X pulses using a Hartmann-Shack Sensor
Fabio Bonaretti, Daniele Faccio, Matteo Clerici +2
We propose a new experimental technique, which allows for a complete characterization of ultrashort optical pulses both in space and in time. Combining the well-known Frequency-Res…