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Updated: Jun 5, 2025
06:42
Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
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Frequency conversion in a hydrogen-filled hollow-core fiber using continuous-wave fields
Optics Letters
|December 13, 2024
Summary
We demonstrate polarization-preserving quantum frequency conversion using continuous-wave stimulated Raman scattering in a hydrogen-filled fiber. This method offers a promising alternative to nonlinear crystals for quantum networks.
Area of Science:
- Quantum Information Science
- Quantum Networking
- Photonics
Background:
- Photons serve as flying qubits in large-area quantum networks and hybrid quantum architectures.
- Quantum frequency conversion is crucial for interfacing quantum components operating at different wavelengths.
- Current methods using nonlinear crystals face limitations in bandwidth, tunability, polarization, and background noise.
Purpose of the Study:
- To demonstrate a novel, polarization-preserving quantum frequency conversion technique.
- To explore stimulated Raman scattering (SRS) in gases as an alternative to nonlinear crystals.
- To enable seamless integration of quantum frequency conversion into existing optical fiber infrastructure.
Main Methods:
- Utilized stimulated Raman scattering (SRS) in a hydrogen-filled antiresonant hollow-core fiber.
- Employed two coherent continuous-wave (CW) pump fields, differing from pulsed pump methods.
- Characterized the frequency conversion process for polarization preservation.
Main Results:
- Successfully achieved polarization-preserving quantum frequency conversion.
- Demonstrated the efficacy of SRS in a gas-filled hollow-core fiber for this application.
- Showcased the potential of CW pump fields for stable and efficient conversion.
Conclusions:
- SRS in hydrogen-filled hollow-core fibers offers a robust and versatile platform for quantum frequency conversion.
- This approach overcomes limitations of traditional nonlinear crystals.
- The technique is well-suited for integration into fiber-based quantum networks and interfacing with single quantum emitters.
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