Publications (6)
Spontaneous photon production in time-dependent epsilon-near-zero materials
A. Prain, S. Vezzoli, N. Westerberg +2
Quantum field theory predicts that a spatially homogeneous but temporally varying medium will excite photon pairs out of the vacuum state. However, this important theoretical predi…
Synthetic magnetism for photon fluids
N. Westerberg, C. Maitland, D. Faccio +3
We develop a theory of artificial gauge fields in photon fluids for the cases of both second-order and third-order optical nonlinearities. This applies to weak excitations in the p…
Perturbative spacetimes from Yang-Mills theory
A. Luna, R. Monteiro, I. Nicholson +4
The double copy relates scattering amplitudes in gauge and gravity theories. In this paper, we expand the scope of the double copy to construct spacetime metrics through a systemat…
Experimental quantum cosmology in time-dependent optical media
N. Westerberg, S. Cacciatori, F. Belgiorno +2
It is possible to construct artificial spacetime geometries for light by using intense laser pulses that modify the spatiotemporal properties of an optical medium. Here we theoreti…
Phase-Insensitive Scattering of Terahertz Radiation
M. Petev, N. Westerberg, E. Rubino +6
The nonlinear interaction between Near-Infrared (NIR) and Terahertz pulses is principally investigated as a means for the detection of radiation in the hardly accessible THz spectr…
Blackbody emission from light interacting with an effective moving dispersive medium
M. Petev, N. Westerberg, D. Moss +5
Intense laser pulses excite a nonlinear polarisation response that may create an effective flowing medium and, under appropriate conditions, a blocking horizon for light. Here we a…