期刊
QUANTUM SCIENCE AND TECHNOLOGY
卷 2, 期 3, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/2058-9565/aa7a37
关键词
spontaneous four-wave mixing; quantum entanglement; optical fibres
资金
- CONACYT [222928, 253366, 271322, 221052]
- PAPIIT (UNAM) [IN1050915]
- AFOSR [FA9550-16-1-0458]
We explore three different mechanisms designed to controllably tune the joint spectrum of photon pairs produced by the spontaneous four-wave mixing (SFWM) process in optical fibres. The first of these is fibre tapering, which exploits the modified optical dispersion resulting from reducing the core radius. We have presented a theory of SFWM for tapered fibres, as well as experimental results for the SFWM coincidence spectra as a function of the reduction in core radius due to tapering. The other two techniques that we have explored are temperature variation and application of longitudinal stress. While the maximum spectral shift observed with these two techniques is smaller than for fibre tapering, they are considerably simpler to implement and have the important advantage that they are based on the use of a single, suitably controlled, fibre specimen.
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