In the last few years, the great utility of exceptional points in sensing linear perturbations has
been recognized. However, physical systems are inherently anharmonic and macroscopic …

Optical quantum memories are key elements in modern quantum technologies to reliably
store and retrieve quantum information. At present, they are conceptually limited to the …

Here, we report an experimental realization of multimode strong coupling in cavity quantum
electrodynamics. This novel regime is achieved when a single artificial atom is …

In recent decades, quantum information technologies have attracted significant attention and
experienced rapid development due to their ultrafast processing speeds and high level of …

An anisotropic quantum vacuum (AQV) opens novel pathways for controlling light-matter
interaction in quantum optics, condensed matter physics, etc. Here, we theoretically …

The concepts and ideas of coherent, nonlinear and quantum optics have been extended to
photon energies in the range of 10–100 kiloelectronvolts, corresponding to soft γ-ray …

A new Fano profile of a flat line is achieved experimentally by manipulating the relative
amplitude of the continuum path, when q takes the pure imaginary number of-i in the x-ray …

Group velocity control is demonstrated for x-ray photons of 14.4 keV energy via a direct
measurement of the temporal delay imposed on spectrally narrow x-ray pulses. Subluminal …

We propose a scheme aimed at achieving spatiospectral control over spontaneous emission
within a four-level atom-light coupling system interacting with optical vortices carrying orbital …

Modern x-ray light sources promise access to structure and dynamics of matter in largely
unexplored spectral regions. However, the desired information is encoded in the light …