Journal
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
Volume 58, Issue 7, Pages -Publisher
SCIENCE PRESS
DOI: 10.1007/s11433-015-5654-y
Keywords
narrowband paired photons; cold atoms; polarization entanglement; four wave mixing
Categories
Funding
- National Natural Science Funds of China [11474107, 11104085, 11204086]
- Guangdong Natural Science Funds for Distinguished Young Scholar [2014A030306012]
- Foundation for outstanding young teacher in Higher Education of Guangdong [Yq2013050]
- Pearl River Nova Program of Guangzhou [2014010]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT1243]
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Quantum networks strongly depend on the efficient interactions between flying photonic quantum bits and local long-lived atomic matter nodes. To achieve the efficient quantum interfaces between polarization-encoding photons and spin-encoding atoms, polarization-entangled paired photons with a bandwidth narrower than the natural linewidth of the atoms are highly required. In this paper, we review the generation of subnatural-linewidth polarization-entangled paired photons through spontaneous four-wave mixing with cold atoms, which is very suitable for the application of quantum networks.
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