Andere Kunden interessierten sich auch für
![Spontaneous Human Combustion]( "Spontaneous Human Combustion")
Spontaneous Human Combustion19,99 €![Amplified Spontaneous Emission of Random Gain Laser Media]( "Amplified Spontaneous Emission of Random Gain Laser Media")
Amplified Spontaneous Emission of Random Gain Laser Media32,99 €![Spontaneous Formation of Space-Time Structures and Criticality]( "Spontaneous Formation of Space-Time Structures and Criticality")
Spontaneous Formation of Space-Time Structures and Criticality231,99 €![Optical Parametric Oscillators for Intracavity Phase Interferometry]( "Optical Parametric Oscillators for Intracavity Phase Interferometry")
Optical Parametric Oscillators for Intracavity Phase Interferometry44,99 €![Dimensional Reduction of Gauge Theories, Spontaneous Compactification and Model Building]( "Dimensional Reduction of Gauge Theories, Spontaneous Compactification and Model Building")
Dimensional Reduction of Gauge Theories, Spontaneous Compactification and Model Building39,99 €![Spontaneous Fission]( "Spontaneous Fission")
Spontaneous Fission25,99 €![Spontaneous Symmetry Breaking]( "Spontaneous Symmetry Breaking")
Spontaneous Symmetry Breaking22,99 €
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Spontaneous parametric down-conversion (SPDC) is an important process in quantum optics, used especially as a source of entangled photon pairs, and of single photons. A nonlinear crystal is used to split photons into pairs of photons that, in accordance with the law of conservation of energy, have combined energies and momenta equal to the energy and momentum of the original photon, are phase-matched in the frequency domain, and have correlated polarizations. (The state of the crystal is unchanged by the process.) If the photons share the same polarisation it is deemed Type I correlation; if they have perpendicular polarisations it is deemed Type II.