Einstein-Podolsky-Rosen Entanglement of Narrow-Band Photons from Cold Atoms
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SCOPUS
- Title
- Einstein-Podolsky-Rosen Entanglement of Narrow-Band Photons from Cold Atoms
- Authors
- Lee, JC; Park, KK; Zhao, TM; Kim, YH
- Date Issued
- 2016-12-13
- Publisher
- American Physical Society
- Abstract
- Einstein-Podolsky-Rosen (EPR) entanglement introduced in 1935 deals with two particles that are entangled in their positions and momenta. Here we report the first experimental demonstration of EPR position-momentum entanglement of narrow-band photon pairs generated from cold atoms. By using two-photon quantum ghost imaging and ghost interference, we demonstrate explicitly that the narrow-band photon pairs violate the separability criterion, confirming EPR entanglement. We further demonstrate continuous variable EPR steering for positions and momenta of the two photons. Our new source of EPR-entangled narrow-band photons is expected to play an essential role in spatially multiplexed quantum information processing, such as, storage of quantum correlated images, quantum interface involving hyperentangled photons, etc.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/37276
- DOI
- 10.1103/PHYSREVLETT.117.250501
- ISSN
- 0031-9007
- Article Type
- Article
- Citation
- Physical Review Letters, vol. 117, no. 25, page. 250501, 2016-12-13
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