With the development of photonic quantum technologies, single photons have become key
for various applications including quantum communication and quantum computing …

ABSTRACT Spontaneous Parametric Down-Conversion (SPDC), also known as parametric
fluorescence, parametric noise, parametric scattering and all various combinations of the …

Femtosecond nonlinear spectroscopy is the main tool for the time-resolved detection of
photophysical and photochemical processes. Since most systems of chemical interest are …

We present a new characterization of quantum theory in terms of simple physical principles
that is different from previous ones in two important respects: first, it only refers to properties …

Quantum mechanics continues to predict effects at odds with a classical understanding of
nature. Experiments with light at the single-photon level have historically been at the …

In a double slit interference experiment, the wave function at the screen with both slits open
is not exactly equal to the sum of the wave functions with the slits individually open one at a …

Quantum theory is the foundation of modern physics. Some of its basic principles, such as
Born's rule, however, are based on postulates which require experimental testing. Any …

The validity of the superposition principle and of Born's rule are well-accepted tenants of
quantum mechanics. Surprisingly, it has been predicted that the intensity pattern formed in a …

Bohr's complementarity is one central tenet of quantum physics. The paradoxical wave-
particle duality of quantum matters and photons has been tested in Young's double-slit …

These lecture notes provide a basic introduction to the framework of generalized
probabilistic theories (GPTs) and a sketch of a reconstruction of quantum theory (QT) from …