Nonclassical photon pairs generated from a room-temperature atomic ensemble
Journal Article
·
· Physical Review. A
- Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026 (China)
We report experimental generation of nonclassically correlated photon pairs from collective emission in a room-temperature atomic vapor cell. The nonclassical feature of the emission is demonstrated by observing a violation of the Cauchy-Schwarz inequality. Each pair of correlated photons is separated by a controllable time delay up to 2 {mu}s. This experiment demonstrates an important step towards the realization of the Duan-Lukin-Cirac-Zoller scheme for scalable long-distance quantum communication.
- OSTI ID:
- 20641059
- Journal Information:
- Physical Review. A, Vol. 69, Issue 4; Other Information: DOI: 10.1103/PhysRevA.69.043819; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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