Bonn 2025 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 58: Quantum Communication II: Implementations (joint session QI/Q)
Q 58.4: Vortrag
Donnerstag, 13. März 2025, 15:15–15:30, HS IX
Frequency conversion in a hydrogen-filled hollow core fiber — •Anica Hamer1, Frank Vewinger2, Thorsten Peters3, and Simon Stellmer1 — 1Physikalisches Institut, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany — 2Institut für Angewandte Physik, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany — 3Institut für Angewandte Physik, Technische Universität Darmstadt, Darmstadt, Germany
Quantum networks, as envisioned for quantum computation and quantum communication applications, are based on a hybrid architecture. Such a layout may include solid-state emitters and network nodes based on photons as so-called flying qubits. This concept requires an efficient and entanglement-preserving exchange of photons between the individual components, which often entails frequency conversion of the photon.
Our approach is based on coherent Stokes Raman scattering (CSRS) in a dense molecular hydrogen gas. This four-wave mixing process sidesteps the limitations of nonlinear crystals, it is intrinsically broadband and does not generate an undesired background. We present broadband and polarization-preserving frequency conversion in a hydrogen-filled anti-resonant hollow-core fiber between 863 nm (InAs/GaAs quantum dots) and the telecom O-band. Disparate from related experiments that employ a pulsed pump field, we here take advantage of two coherent continuous-wave pump fields.
Keywords: Nonlinear Frequency Conversion; Hollow Core Fiber; Stokes Raman Scattering; Four-Wave Mixing Process; Quantum Dots