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

Recent investigations have suggested that the use of non-classical states of light, such as
entangled photon pairs, may open new and exciting avenues in experimental two-photon …

We present a theoretical analysis of two-photon absorption of classical and squeezed light
valid when one-photon absorption to an intermediate state is either resonant or far-detuned …

Fluorescence excitation by absorption of entangled photon pairs offers benefits compared to
classical imaging techniques, such as the attainment of higher signal levels at low excitation …

It depends. For a single molecule interacting with one mode of a biphoton probe, we show
that the spectroscopic information has three contributions, only one of which is a genuine …

Resonant intermediate states have been proposed to increase the efficiency of entangled
two-photon absorption (ETPA). Although resonance-enhanced ETPA (r-ETPA) has been …

We report how the unique temporal and spectral features of pulsed entangled photons from
a parametric downconversion source can be utilized for manipulating electronic excitations …

Recently, different experimental methods intended to detect the entangled two-photon
absorption (ETPA) phenomenon in a variety of materials have been reported. The present …

In this theoretical study, we show how ultrafast electron–nuclear dynamics in a molecule can
be monitored by two-photon absorption of time–energy entangled photon pairs generated …

Two-photon excitation spectroscopy is a nonlinear technique that has gained rapidly in
interest and significance for studying the complex energy-level structure and transition …