Quantum imaging is a multifaceted field of research that promises highly efficient imaging in
extreme spectral ranges as well as ultralow‐light microscopy. Since the first proof‐of …

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 …

Owing to its capacity for unique (bio)-chemical specificity, microscopy with mid–infrared (IR)
illumination holds tremendous promise for a wide range of biomedical and industrial …

Conventional spectroscopy uses classical light to detect matter properties through the
variation of its response with frequencies or time delays. Quantum light opens up new …

Quantum sensing is highly attractive for accessing spectral regions in which the detection of
photons is technically challenging: Sample information is gained in the spectral region of …

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 …

We present a tutorial on the phenomenon of induced coherence without induced emission,
and specifically its application to imaging and metrology. It is based on a striking effect …

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

Optical coherence tomography (OCT) is an appealing technique for bio-imaging, medicine,
and material analysis. For many applications, OCT in mid-and far-infrared (IR) leads to …

Mid-infrared (mid-IR) light scatters much less than shorter wavelengths, allowing greatly
enhanced penetration depths for optical imaging techniques such as optical coherence …