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 …

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 …

Frequency up-conversion has become amongst the most prevalent techniques for detection
of terahertz waves in metrology systems. State-of-the-art up-conversion techniques rely on …

Light represents one of the most fundamental and also natural ways of information transfer
available in both physics and our everyday life. As a result, quantum optics possesses large …

The 2023 terahertz science and technology roadmap Page 1 Delft University of Technology
The 2023 terahertz science and technology roadmap Leitenstorfer, Alfred; Moskalenko, Andrey …

A detailed understanding of the physics of vacuum fluctuations is of paramount importance
for answering fundamental questions related to a broad spectrum of advanced topics …