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Acta Optica Sinica

Raman Effect on Gain Spectrum of Different Frequency Propagation Regimes in Photonic Crystal Fibers

柴宏宇 Chai Hongyu, 贾维国 Jia Weiguo, 韩凤 Han Feng, 门克内木乐 Menkeneimule, Jun Yang, 张俊萍 Zhang Junping

Published Jan 1, 2013• 0 citations
Publisher
DOI
10.3788/aos201333.1219001

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Efficient quantum frequency conversion (QFC) across large spectral gaps remains a challenge for quantum networking. We theoretically investigate a cascaded QFC in hydrogen-filled hollow-core photonic crystal fiber (HC-PCF) to convert telecom photons (1550 nm) to the visible spectrum (676 nm) via two anti-Stokes Raman shifts. Although simultaneous phase matching is impractical across such a wide window, operating in a high-pressure regime overcomes phase mismatches because the high-gain Raman coherence wave has a shorter spatial extent than the nonlinear coherence length. Maxwell-Bloch simulations show conversion efficiencies exceeding 50%. This approach offers a flexible, low-loss path for integrating disparate quantum technologies in a single fiber platform.
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