Resource-efficient frequency conversion for quantum networks via sequential four-wave mixing

TL;DR

This paper presents a resource-efficient, single-pump scheme for bidirectional frequency conversion in quantum networks using four-wave mixing in photonic crystal fiber, achieving notable efficiencies and scalability.

Contribution

It introduces a novel, resource-efficient frequency conversion method using a single pump laser for quantum network applications.

Findings

Achieved 4.2% up-conversion efficiency

Achieved 37% down-conversion efficiency

Demonstrated bidirectional conversion between specific wavelengths

Abstract

We report a resource-efficient scheme in which a single pump laser was used to achieve frequency conversion by Bragg-scattering four-wave mixing in a photonic crystal fiber. We demonstrate bidirectional conversion of coherent light between Sr+ P1/2 - D3/2 emission wavelength at 1092 nm and the telecommunication C band with conversion efficiencies of 4.2 % and 37 % for up- and down-conversion, respectively. We discuss how the scheme may be viably scaled to meet the temporal, spectral and polarisation stability requirements of a hybrid light-matter quantum network.