Fiber-based biphoton source with ultrabroad frequency tunability
arXiv:2106.10208 · doi:10.1364/OL.434434
Abstract
Tunable biphotons are highly important for a wide range of quantum applications. For some applications, especially interesting are cases where two photons of a pair are far apart in frequency. Here, we report a tunable biphoton source based on a xenon-filled hollow-core photonic crystal fiber. Tunability is achieved by adjusting the pressure of the gas inside the fiber. This allows us to tailor the dispersion landscape of the fiber, overcoming the principal limitations of solid-core fiber-based biphoton sources. We report a maximum tunability of 120 THz for a pressure range of 4 bar with a continuous shift of 30 THz/bar. At 21 bar, the photons of a pair are separated by more than one octave. Despite the large separation, both photons have large bandwidths. At 17 bar, they form a very broad (110 THz) band around the frequency of the pump.
arXiv comment5 pages, 4 figures
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Cited by in corpus (6)
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- Stimulated Raman Scattering and Molecular Modulation in Anti-resonant Hollow-core Fibres
- Tunable fiber source of entangled UV-C and infrared photons