Quantum metrology provides a route to overcome practical limits in sensing devices. It holds
particular relevance to biology, where sensitivity and resolution constraints restrict …

Two-dimensional electronic spectroscopy (2DES) reveals connections between an optical
excitation at a given frequency and the signals it creates over a wide range of frequencies …

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 …

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

Conspectus The application of quantum states of light such as entangled photons, for
example, created by parametric down conversion, has experienced tremendous progress in …

Quantum entanglement has emerged as a great resource for studying the interactions
between molecules and radiation. We propose a new scheme of stimulated Raman …

Entangled two-photon absorption (ETPA) has recently become a topic of lively debate,
mainly due to the apparent inconsistencies in the experimentally reported ETPA cross …

Conspectus The enhanced interest in quantum-related phenomena has provided new
opportunities for chemists to push the limits of detection and analysis of chemical processes …

We introduce a new method, called entangled photon-pair two-dimensional fluorescence
spectroscopy (EPP-2DFS), to sensitively probe the nonlinear electronic response of …

We utilize quantum entangled photons to carry out nonlinear optical spectroscopy in organic
molecules with an extremely small number of photons. For the first time, fluorescence is …