| Download | - View final version: Quantum frequency conversion with ultra-broadband tuning in a Raman memory (PDF, 797 KB)
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| DOI | Resolve DOI: https://doi.org/10.1103/PhysRevA.95.053816 |
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| Author | Search for: Bustard, Philip J.1; Search for: England, Duncan G.1; Search for: Heshami, Khabat1; Search for: Kupchak, Connor1; Search for: Sussman, Benjamin J.1 |
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| Name affiliation | - National Research Council of Canada. Security and Disruptive Technologies
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| Format | Text, Article |
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| Abstract | Quantum frequency conversion is a powerful tool for the construction of hybrid quantum photonic technologies. Raman quantum memories are a promising method of conversion due to their broad bandwidths. Here we demonstrate frequency conversion of THz-bandwidth, fs-duration photons at the single-photon level using a Raman quantum memory based on the rotational levels of hydrogen molecules. We shift photons from 765 nm to wavelengths spanning from 673 to 590 nm—an absolute shift of up to 116 THz. We measure total conversion efficiencies of up to 10% and a maximum signal-to-noise ratio of 4.0(1):1, giving an expected conditional fidelity of 0.75, which exceeds the classical threshold of 2/3. Thermal noise could be eliminated by cooling with liquid nitrogen, giving noiseless conversion with wide tunability in the visible and infrared. |
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| Publication date | 2017-05-05 |
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| Publisher | American Physical Society |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 23002481 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction |
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| Record identifier | 5c58da97-8d2e-46da-8691-a84781ad9848 |
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| Record created | 2017-11-15 |
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| Record modified | 2020-05-30 |
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