Time-varying media have recently emerged as a new paradigm for wave manipulation, due
to the synergy between the discovery of highly nonlinear materials, such as epsilon-near …

Recent advances in ultrafast, large-modulation photonic materials have opened the door to
many new areas of research. One specific example is the exciting prospect of photonic time …

During the past few years, the optics and photonics communities have renewed their
attention toward transparent conducting oxides (TCOs), which for over two decades have …

A time-dependent change in the refractive index of a material leads to a change in the
frequency of an optical beam passing through that medium. Here, we experimentally …

We report a switchable time-varying mirror, composed of an indium-tin-oxide–gold bilayer,
displaying a tenfold modulation of reflectivity (Δ R≈ 0.6), which saturates for a driving-pump …

Integrated photonic circuits are created as a stable and small form factor analogue of fiber-
based optical systems, from wavelength-division multiplication transceivers to more recent …

Time-varying metamaterials rely on large and fast changes of the linear permittivity. Beyond
the linear terms, however, the effect of a non-perturbative modulation of the medium on …

Epsilon-near-zero (ENZ) polaritons in a thin transparent conducting-oxide film exhibit a
significant electric field enhancement and localization within the film at frequencies close to …

Epsilon-near-zero (ENZ) materials have shown significant potential for nonlinear optical
applications due to their extraordinary enhancement of optical nonlinearity. Our experiments …

Spacetime metamaterials are opening new regimes of light–matter interactions based on the
breaking of temporal and spatial symmetries, as well as intriguing concepts associated with …