Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009rmxaa..45..179g&link_type=abstract
Revista Mexicana de Astronomía y Astrofísica Vol. 45, pp. 179-189 (2009) (http://www.astroscu.unam.mx/~rmaa/)
Astronomy and Astrophysics
Astrophysics
Hii Regions, Planetary Nebulae: Individual (Ic 2149, Ngc 7293), Sun: Corona
Scientific paper
The theories of quantum entanglement between two distant particles, which clearly confirm the non-local nature of Quantum Mechanics, are applied to naturally produced particles in astrophysical objects. We study the production and reception of the cases of optical quantum entanglement most feasible to be observed: the two-photon spontaneous transition of the hydrogen 2 ^{2}S_{1/2} metastable level, which is known to be one of the components of the continuous spectra of ionized regions. We obtain the two-photon emission rate for four astrophysical objects: the Orion Nebula, two nearby planetary nebulae IC 2149 and NGC 7293, and the solar corona. The production of entangled pairs per second is 5.80×10^48, 9.39×10^45, 9.77×10^44, and 1.46×10^16 respectively. The distribution of the propagation directions of both emitted photons does not vanish at any angle; therefore it is possible to observe the entangled pair at an angles θ ≈ 0°. Because the number of two-photon coincidences goes as the fourth power of the ratio between the detector size and the distance from the astrophysical object, coincidences are scarce; for its detection we require receivers much larger than those currently available.
Echevarria J. J.
Gomez Javier
Peimbert Antonio
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