Journal
FRONTIERS OF PHYSICS
Volume 7, Issue 5, Pages 494-503Publisher
HIGHER EDUCATION PRESS
DOI: 10.1007/s11467-012-0260-1
Keywords
narrowband photon pair; cold atomic ensembles; spontaneous four-wave mixing; waveform reshaping
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Funding
- East China Normal University
- Hong Kong Research Grants Council [HKUST600809]
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In this article, we review on narrowband photon pairs produced in nonlinear crystals, and especially in atomic ensembles. In atomic ensembles, write-read process in pulse mode and spontaneous four-wave mixing process (SFWM) in continuous mode are two popular photon pair generation schemes. We specifically discuss the experimental works with continuous SFWM scheme in cold atomic ensembles. Photon pairs produced in these systems are characteristic of controllable long coherence time, and therefore are accessible with direct temporal modulation. We elaborate on the recent techniques on modulation and waveform reshaping of narrow-band paired photons.
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