Shape-preserving and unidirectional frequency conversion using four-wave mixing Bragg scattering

Abstract

In this work, we investigate the properties of four-wave mixing Bragg scattering in a configuration that employs orthogonally polarized pumps in a birefringent waveguide. This configuration enables a large signal conversion bandwidth, and allows strongly unidirectional frequency conversion as undesired Bragg-scattering processes are suppressed by waveguide birefringence. Moreover, we show that this form of four-wave mixing Bragg scattering preserves the (arbitrary) signal pulse shape, even when driven by pulsed pumps.

arXiv comment11 pages + refs, 5 figures

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• A fiber-integrated quantum memory for telecom light
• Group-velocity symmetry in photonic crystal fibre for ultra-tunable quantum frequency conversion
• Storage of telecom wavelength heralded single photons in a fiber cavity quantum memory