… Whereas in frequency doubling two photons are converted into one photon of higher energy,
in SPDC one photon from a pump laser beam is spontaneously converted into two photons, …

… 10) experiments the observed correlations cannot be explained via classical light fields,
but can easily be understood by assuming single photons that can only be detected once …

… An individual photon may be polarized along a specific direction, say the horizontal, and we
… by passing the photon through a horizontally oriented polarizer. A click in a photon detector …

… Strictly speaking, for a finite photon mass, the speed of light … using this effect to evaluate the
photon mass. Therefore, it would be … bound on the photon Compton length and photon mass: …

… However, being able to discriminate two or more photons from one photon is in principle
not possible using a single click detector. Below, we will describe ways to discriminate photon …

… incorrect presentations of the work function and the photon concept. In this paper, I present,
… The story, entitled “The Birth of the Photon Concept,” has been tested in a classroom setting …

… of single-photon detectors to observe … photon from an entangled pair through our double-slit
setup and show the dependence of the resulting interference pattern on the twin photon's …

… We highlight the limitations of the theoretical tools used to describe photon–matter interactions
but also identify new phenomena and hidden aspects of these interactions that can be …

… using a heralded single-photon (HSP) source with a trigger photon 0 (photons are indicated
by black numerals on red circles). An EPR source generates an entangled pair of photons 2 …