Source of Single Photon State
Single photons are routinely generated using single emitters (atoms, Nitrogen-vacancy center, Quantum dot ). However, these sources are not always very efficient (low probability of actually getting a single photon on demand) and often complex and unsuitable out of a laboratory environment. Other sources are commonly used that overcome these issues at the expense of an nondeterministic behavior. Heralded single photon sources are probabilistic two-photon sources from whom the pair is split and the detection of one photon heralds the presence of the remaining one. These sources usually rely on the optical nonlinearity of some materials like periodically poled Lithium niobate (Spontaneous parametric down-conversion), or silicon (spontaneous Four-wave mixing) for example.
Read more about this topic: Fock State
Famous quotes containing the words source of, source, single and/or state:
“The source of poetry that
seeing the clock stopped, says,
The clock has stopped
that ticked yesterday so well?”
—William Carlos Williams (1883–1963)
“The practice of S/M is the creation of pleasure.... And that’s why S/M is really a subculture. It’s a process of invention. S/M is the use of a strategic relationship as a source of pleasure.”
—Michel Foucault (1926–1984)
“You behold a range of exhausted volcanoes. Not a flame flickers on a single pallid crest.”
—Benjamin Disraeli (1804–1881)
“For I have learned, in whatsoever state I am, therewith to be content.”
—Bible: New Testament Philippians 4:11.