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

Optical coherence tomography (OCT) imaging has played a pivotal role in the field of retina.
This light-based, non-invasive imaging modality provides high-quality, cross-sectional …

Nearly 30 years ago, two-photon interference was observed, marking the beginning of a
new quantum era. Indeed, two-photon interference has no classical analogue, giving it a …

In this paper, we review the developments in optical coherence tomography (OCT) for three-
dimensional non-invasive imaging. A number of different OCT techniques are discussed in …

Entangled-photon coincidence imaging is a method to nonlocally image an object by
transmitting a pair of entangled photons through the object and a reference optical system …

The development of quantum technologies on nanophotonic platforms has seen momentous
progress in the past decade. Despite that, a demonstration of time-frequency entanglement …

We present an experimental demonstration of quantum-optical coherence tomography. The
technique makes use of an entangled twin-photon light source to carry out axial optical …

When two indistinguishable photons are each incident on separate input ports of a
beamsplitter, they “bunch” deterministically, exiting via the same port as a direct …

We generate ultrabroadband biphotons via the process of spontaneous parametric down-
conversion (SPDC) in quasi-phase-matched nonlinear gratings that have a linearly chirped …

The purpose of this tutorial paper is to present a broad overview of photon-pair generation
through the spontaneous four wave mixing (SFWM) process in optical fibers. Progress in …