منابع مشابه
Quantum communication with dark photons
We show that quantum information may be transferred between atoms in different locations by using ‘‘phantom’’ or ‘‘dark’’ photons: the atoms are coupled through electromagnetic fields, but the corresponding field modes do not have to be fully populated. In the case where atoms are placed inside optical cavities, errors in quantum information processing due to photon absorption inside the cavity...
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The use of satellites to distribute entangled photon pairs (and single photons) provides a unique solution for long-distance quantum communication networks. This overcomes the principle limitations of Earth-bound technology, i.e., the range of the order of 100 km afforded by both optical fiber and by terrestrial free-space links.
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Quantum communication holds promise for absolutely security in secret message transmission. Quantum secure direct communication is an important mode of the quantum communication in which secret messages are securely communicated over a quantum channel directly. It has become one of the hot research areas in the last decade, and offers both high security and instantaneousness in communication. I...
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Researchers have studied electron-positron (e+e-) collisions for interactions that produce a normal photon γ and a dark photon A′ that interacts with ordinary matter particles. The dark photon can potentially decay into an e+epair (shown here) or a μ+μpair (not shown). However, the latest results from the BaBar collaboration offer no sign of dark photons, thus placing new limits on these types ...
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Bell’s inequalities impose an upper limit on correlations between measurements of two-photon states under the assumption that the photons play by a set of local rules rather than by quantum mechanics. Quantum theory and decades of experiments both violate this limit. Recent theoretical work in quantum foundations has demonstrated that a local realist model can explain the non-local correlations...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 1999
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.59.2659