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Updated: Jun 22, 2026
08:48
Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
Published on: November 22, 2019
High-brightness, low-noise, all-fiber photon pair source
Shellee D Dyer1, Burm Baek, Sae Woo Nam
1NIST, Optoelectronics Division, Boulder, CO 80305, USA.
Optics Express
|June 10, 2009
Summary
We developed a bright, low-noise fiber optic photon pair source for telecom C-band. This source achieves high generation rates and excellent signal quality, crucial for quantum communication applications.
Area of Science:
- Quantum optics
- Photonics
- Telecommunications
Background:
- Photon pair sources are essential for quantum communication and computation.
- Existing sources often struggle with low generation rates, high noise, or limited spectral bandwidth.
Purpose of the Study:
- To develop a high-performance, all-fiber photon pair source operating in the telecom C-band.
- To achieve high pair generation rates and high coincidence-to-accidental ratios (CARs).
Main Methods:
- Utilized continuous-wave (CW) pumped spontaneous four-wave mixing (SFWM) in dispersion-shifted fiber.
- Cooled the fiber to 4 Kelvin to minimize Raman noise.
- Employed low-jitter, low-dark-count superconducting single-photon detectors for photon detection.
Main Results:
- Achieved pair generation rates exceeding 10 MHz.
- Maintained coincidence-to-accidental ratios (CARs) greater than 100.
- Demonstrated one of the brightest and lowest-noise fiber-based photon pair sources to date.
Conclusions:
- The developed all-fiber source offers a significant advancement for quantum technologies operating in the telecom C-band.
- The combination of high generation rates and low noise makes it suitable for demanding quantum communication protocols.
