Photonic Time-Crystals (PTCs) are materials in which the refractive index varies periodically
and abruptly in time. This medium exhibits unusual properties such as momentum bands …

Analogue gravity is a research programme which investigates analogues of general
relativistic gravitational fields within other physical systems, typically but not exclusively …

Photonic time crystals (PTCs), materials with a dielectric permittivity that is modulated
periodically in time, offer new concepts in light manipulation. We study theoretically the …

We observe spontaneous Hawking radiation, stimulated by quantum vacuum fluctuations,
emanating from an analogue black hole in an atomic Bose–Einstein condensate …

The theory of Hawking radiation can be tested in laboratory analogues of black holes. We
use light pulses in nonlinear fiber optics to establish artificial event horizons. Each pulse …

By a combination of quantum field theory and general relativity, black holes have been
predicted to emit Hawking radiation. Observation from an actual black hole is, however …

The ability to generate particles from the quantum vacuum is one of the most profound
consequences of Heisenberg's uncertainty principle. Although the significance of vacuum …

We discuss effects of loss of coherence in low energy quantum systems caused by or related
to gravitation, referred to as gravitational decoherence. These effects, resulting from random …

The zero-point energy stored in the modes of an electromagnetic cavity has experimentally
detectable effects, giving rise to an attractive interaction between the opposite walls, the …

Various fundamental phenomena of strongly correlated quantum systems such as high-T c
superconductivity, the fractional quantum-Hall effect and quark confinement are still awaiting …