Terahertz (THz) radiation encompasses a wide spectral range within the electromagnetic
spectrum that extends from microwaves to the far infrared (100 GHz–∼ 30 THz). Within its …

According to quantum field theory, empty space—the ground state with all real excitations
removed—is not empty, but filled with quantum-vacuum fluctuations. Their presence can …

In many states of the quantum electromagnetic field, including the vacuum state,
entanglement exists between different space-time regions—even spacelike separated ones …

Time-varying optical media, whose dielectric properties are actively modulated in time,
introduce a host of novel effects in the classical propagation of light, and are of intense …

A new theoretical framework to describe the experimental advances in electro-optic
detection of broadband quantum states, specifically the quantum vacuum, is devised. Electro …

Following recent progress in the experimental application of electro-optic sampling to the
detection of the quantum fluctuations of the electromagnetic-field ground state and …

Light–matter coupling strength and optical loss are two key physical quantities in cavity
quantum electrodynamics (CQED), and their interplay determines whether light–matter …

Confining electromagnetic fields inside an optical cavity can enhance the light-matter
coupling between quantum materials embedded inside the cavity and the confined photon …

Source radiation (radiation reaction) and vacuum field fluctuations can be seen as two
inseparable contributions to processes such as spontaneous emission, the Lamb shift, or the …

We propose a multichannel version of quantum electro-optic sampling involving
monochromatic field modes. It allows for multiple simultaneous measurements of arbitrarily …