منابع مشابه
Joining the quantum state of two photons into one
Photons are the ideal carriers of quantum information for communication1,2. Each photon can have a single or multiple qubits encoded in its internal quantum state, as defined by optical degrees of freedom such as polarization, wavelength, transverse modes and so on3,4. However, as photons do not interact, multiplexing and demultiplexing the quantum information across photons has not been possib...
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We compute the annihilation cross-section of two neutralinos at rest into two photons, which is of importance for the indirect detection of neutralino dark matter in the galactic halo through a quasi-monochromatic gamma-ray line. We include all diagrams to one-loop level in the minimal supersymmetric extension of the standard model. We use the helicity formalism, the backgroundfield gauge, and ...
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We present the two-loop matrix elements for the scattering of two gluons into two photons in QCD. These matrix elements will enter into improved estimates of the QCD background to Higgs production at the LHC when the Higgs decays into two photons. The photon mode is especially important if MH < 140 GeV. We also give the amplitudes for the crossed process, gγ → gγ.
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ژورنال
عنوان ژورنال: Physics
سال: 2014
ISSN: 1943-2879
DOI: 10.1103/physics.7.108