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Bright narrowband biphoton generation from a hot rubidium atomic vapor cell

Abstract:
We demonstrate the generation of high-quality narrowband biphotons from a Doppler-broadened hot rubidium atomic vapor cell. Choosing a double-K atomic energy level scheme for optimizing both spontaneous four-wave mixing nonlinear parametric interaction and electromagnetically induced transparency (EIT), we achieve a biphoton spectral brightness as high as 14 000 s-1 MHz-1. Meanwhile, we apply a spatially tailored optical pumping beam for reduction of the Raman noise and obtain a violation of the Cauchy-Schwarz inequality by a factor of 1023.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1063/1.4980073

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Atomic & Laser Physics
Role:
Author
ORCID:
0000-0003-2094-0123


Publisher:
AIP Publishing
Journal:
Applied Physics Letters More from this journal
Volume:
110
Issue:
16
Article number:
161101
Publication date:
2017-04-17
Acceptance date:
2017-03-03
DOI:
EISSN:
1077-3118
ISSN:
0003-6951


Language:
English
Keywords:
Pubs id:
1169541
Local pid:
pubs:1169541
Deposit date:
2021-03-28

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