Two processes of photon-pair creation can be arranged such that the paths of the emitted
photons are identical. The path information is thereby not erased but rather never born in the …

Entanglement is a quintessential quantum mechanical phenomenon with no classical
equivalent. First discussed by Einstein, Podolsky, and Rosen and formally introduced by …

Recently, ferromagnetic‐heterostructure spintronic terahertz (THz) emitters have been
recognized as one of the most promising candidates for next‐generation THz sources …

Hyperspectral microscopy is an imaging technique that provides spectroscopic information
with high spatial resolution. When applied in the relevant wavelength region, such as in the …

Nonlinear interferometers allow for mid-infrared spectroscopy with near-infrared detection
using correlated photons. Previous implementations have demonstrated a spectral …

Quantum cascade lasers (QCLs) represent the most fascinating achievement of quantum
engineering, showing how artificial materials can be generated through quantum design …

Infrared-terahertz (IRT) resonant absorption complies with unique biomolecule fingerprints,
including neurotransmitters, proteins, ribonucleic acid, and deoxyribonucleic acid, rendering …

Imaging based on the induced coherence effect makes use of photon pairs to obtain
information of an object without detecting the light that probes it. While one photon …

Nonlinear interferometers allow spectroscopy in the mid-infrared range by detecting
correlated visible light, for which non-cooled detectors with higher specific detectivity and …

While fundamental to quantum sensing, quantum state control has been traditionally limited
to extreme conditions. This restricts the impact of the practical implementation of quantum …