Editorial: Future directions in novel laser source development: Dynamical properties, and beam manipulation
Xing Fu,
Tijmen Euser,
Shu-Wei Huang,
Nicolas Y. Joly,
Shangran Xie
FRONTIERS IN PHYSICS
10
1052461
(2022)
| Journal
| PDF
Editorial on the Research Topic: Future Directions in Novel Laser Source Development: Dynamical Properties, and Beam Manipulation
Spatially resolved spectroscopy of alkali metal vapour diffusing inside hollow-core photonic crystal fibres
Daniel Häupl,
Daniel Weller,
Robert Loew,
Nicolas Y. Joly
NEW JOURNAL OF PHYSICS
24
(11)
113017
(2022)
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We present a new type of compact and all-glass based vapour cell integrating hollow-core photonic crystal fibres. The absence of metals, as in a traditional vacuum chamber and the much more compact geometry allows for fast and homogeneous heating. As a consequence we can fill the fibres on much faster timescales, ranging from minutes to hours. Additionally the all-glass design ensures optical access along the fibre. This allows live monitoring of the diffusion of rubidium atoms inside the hollow-core by measuring the frequency-dependent fluorescence from the atoms. The atomic density is numerically retrieved using a five-level system of Bloch-equations.
Tunable and state-preserving frequency conversion of single photons in hydrogen
Rinat Tyumenev,
Jonas Hammer,
Nicolas Joly,
Philip St.J. Russell,
David Novoa
In modern quantum technologies, preservation of the photon statistics of quantum optical states upon frequency conversion holds the key to the viable implementation of quantum networks, which often require interfacing of several subsystems operating in widely different spectral regions. Most current approaches offer only very small frequency shifts and limited tunability, while suffering from high insertion loss and Raman noise originating in the materials used. We introduce a route to quantum-correlation–preserving frequency conversion using hydrogen-filled antiresonant-reflecting photonic crystal fibers. Transient optical phonons generated by stimulated Raman scattering enable selective frequency up-conversion by 125 terahertz of the idler photon of an entangled pair, with efficiencies up to 70%. This threshold-less molecular modulation process preserves quantum correlations, making it ideal for applications in quantum information.
Kontakt
Forschungsgruppe Nicolas Joly
Professur für Photonik Friedrich-Alexander-Universität Erlangen-Nürnberg
und
Max-Planck-Institut für die Physik des Lichts Staudtstr. 2 91058 Erlangen, Germany
