Spectrally pure single photons at telecommunications wavelengths using commercial birefringent optical fiber
Abstract
We report a bright and tunable source of spectrally pure heralded single photons in the telecom O-Band, based on cross-polarized four wave mixing in a commercial birefringent optical fiber. The source can achieve a purity of 85%, heralding efficiency of 30% and a coincidence-to-accidentals ratio of 108. Furthermore, through the measurements of joint spectral intensities, we find that the fiber is homogeneous over at least 45 centimeters and thus can potentially realize 4 sources that can produce identical quantum states of light. This paves the way for a cost-effective fiber-optic approach to implement multi-photon quantum optics experiments.
- Publication:
-
Optics Express
- Pub Date:
- February 2020
- DOI:
- 10.1364/OE.383704
- arXiv:
- arXiv:1907.05477
- Bibcode:
- 2020OExpr..28.5147L
- Keywords:
-
- Quantum Physics;
- Physics - Optics
- E-Print:
- 14 pages, 10 figures