Journal ArticleDOI
Quantum correlations in optics
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In many nonlinear optical problems, such as down-conversion and four-wave mixing, the photons are generated in pairs and the strong correlation between the photons in a pair, characterized by either the correlations between operators corresponding to observables associated with individual photons, or the correlated state describing the two photons, may lead to various nonclassicalities as discussed by the authors.Abstract:
In many nonlinear optical problems, for example in down-conversion and four-wave mixing, the photons are generated in pairs The strong correlation between the photons in a pair, characterized by either the correlations between operators corresponding to observables associated with individual photons, or the correlated state describing the two photons, may lead to various nonclassicalities We discuss some of these nonclassical effects and their experimental demonstrations in nonlinear optical processesread more
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Observation of squeezed states generated by four-wave mixing in an optical cavity
TL;DR: Squeezed states of the electromagnetic field have been generated by nondegenerate four-wave mixing due to Na atoms in an optical cavity by measuring the total noise level in the deamplified quadrature below the vacuum noise level.
References
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Journal ArticleDOI
Can Quantum-Mechanical Description of Physical Reality Be Considered Complete?
TL;DR: Consideration of the problem of making predictions concerning a system on the basis of measurements made on another system that had previously interacted with it leads to the result that one is led to conclude that the description of reality as given by a wave function is not complete.
Journal ArticleDOI
On the Einstein-Podolsky-Rosen paradox
TL;DR: In this article, it was shown that even without such a separability or locality requirement, no hidden variable interpretation of quantum mechanics is possible and that such an interpretation has a grossly nonlocal structure, which is characteristic of any such theory which reproduces exactly the quantum mechanical predictions.
Journal ArticleDOI
Coherent and incoherent states of the radiation field
TL;DR: In this article, the photon statistics of arbitrary fields in fully quantum-mechanical terms are discussed, and a general method of representing the density operator for the field is discussed as well as a simple formulation of a superposition law for photon fields.
Journal ArticleDOI
Observation of squeezed states generated by four-wave mixing in an optical cavity.
TL;DR: In this paper, a balanced homodyne detector was used to measure the optical noise in the cavity, comprised of primarily vacuum fluctuations and a small component of spontaneous emission from the pumped Na atoms.
Journal ArticleDOI
Bell's theorem. Experimental tests and implications
John F. Clauser,Abner Shimony +1 more
TL;DR: Bell's theorem represents a significant advance in understanding the conceptual foundations of quantum mechanics as mentioned in this paper, showing that essentially all local theories of natural phenomena that are formulated within the framework of realism may be tested using a single experimental arrangement.