Correlated Photon-Pair Generation in a Highly Nonlinear Fiber Using Spontaneous FWM
\'Alvaro J. Almeida, Lu\'is M. Martins, Nuno A. Silva, Nelson J. Muga,, and Armando N. Pinto
TL;DR
This paper demonstrates the generation of correlated photon pairs at 1550 nm using spontaneous four-wave mixing in a highly nonlinear fiber, analyzing the source quality and factors affecting it, such as Raman scattering.
Contribution
It reports the first measurement of correlated photon pairs in HNLF via SpFWM and evaluates the impact of spontaneous Raman scattering on source quality.
Findings
CAR of 2.77 at 1.1 mW pump power
SpRS photons degrade photon pair source quality
Photon pairs generated at telecom wavelength
Abstract
We generate 1550 nm correlated photon pairs through the spontaneous four-wave mixing (SpFWM) process in a highly nonlinear fiber (HNLF). The pair source quality generation is evaluated by the coincidence-to-accidental ratio (CAR) parameter. It is verified that the spontaneous Raman scattering (SpRS) photons generated inside the fiber contribute to the degradation of the source. Nevertheless, a CAR value of 2.77 is found for a pump power at the input of the fiber of 1.1 mW.
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Taxonomy
TopicsQuantum optics and atomic interactions · Quantum Information and Cryptography · Photonic and Optical Devices