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Nature 419, 577 (10 October 2002) | doi:10.1038/419577a
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Basic Science Medical Educators
- Texas Tech University Health Sciences Center
- El Paso, Texas, USA
Tenure-Track Faculty Position Experimental Condensed Matter Physics Department of Physics McGill University
- McGill Univerisity
- Montreal, Quebec, Canada
Quantum physics: Single photons stick together
Philippe Grangier
Abstract
In the right circumstances, two photons can meet and 'coalesce'. This effect has now been observed for photons emitted independently from a single-photon source, and has implications for quantum computing.
Can two photons that have never met know something about each other? The question bothered Einstein, and, reporting on page 594 of this issue, Santori et al.1 demonstrate in a new context that the answer is 'yes'.
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