Quantum 2025 – wissenschaftliches Programm
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TUE: Tuesday Contributed Sessions
TUE 1: QIP Implementations: Photons III
TUE 1.2: Vortrag
Dienstag, 9. September 2025, 14:30–14:45, ZHG001
Hollow-core light cages: Towards scalable multiplexed quantum memories — •Esteban Gómez-López1, Dominik Ritter1, Jisoo Kim2, Harald Kübler3, Markus A. Schmidt2,4, and Oliver Benson1 — 1Humboldt-Universität zu Berlin, Berlin, Germany — 2Leibniz Institute of Photonic Technology, Jena, Germany — 3Universität Stuttgart, Stuttgart, Germany — 4Otto Schott Institute of Material Research, Jena, Germany
Quantum memories play a fundamental role in synchronizing quantum network nodes. Using electromagnetically induced transparency (EIT) in hot atomic vapors provides easy-to-handle systems capable of storing light for up to seconds [1]. Employing a novel photonic structure -a nanoprinted hollow-core light cage (LC)- can enhance the effects of EIT when interfaced with Cs vapor, offering the advantage of faster atomic diffusion inside the core compared to other hollow-core structures [2]. In this work, we show the storage of faint coherent light pulses in the atomic medium confined within the core of the LC for hundreds of nanoseconds. The intrinsic efficiency of the memory was optimized by performing a parameter scan on the signal bandwidth and control power driving the memory [3]. This paves the way towards an on-chip integrated module for quantum memories and as a platform for coherent interaction of light and warm atomic vapors. [1] Katz, O. and Firstenberg, O., Nat. Commun. 9, 2074 (2018). [2] Davidson-Marquis, F., et al., Light. Sci. Appl. 10, 114 (2021). [3] Gómez-López, E., et al., Preprint: arXiv:2503.22423 (2025).
Keywords: hollow core waveguides; quantum memories; nanoprinted photonics; atomic vapors