Louisiana State University Physics & Astronomy

It is well known that the radiation emitted by independent incoherently excited atomic systems leads to no interference as is expected from the famous statement of Dirac that each photon interferes with itself. We discuss new theoretical ideas and the experiments which detect interferences between independent photons. Such interferences turn out to have strict quantum character. We further demonstrate possible uses of such interferences in quantum information science with neutral atoms and trapped ions and in communication between remote qubits. The ideas on interference are applicable to other systems of single particles.

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