Light storage in light cages: a scalable platform for multiplexed quantum memories

Esteban Gómez-López; Dominik Ritter; Jisoo Kim; Harald Kübler; Markus A. Schmidt; Oliver Benson

doi:10.1038/s41377-025-02085-5

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Light storage in light cages: a scalable platform for multiplexed quantum memories

Original Articles

- Light storage in light cages: a scalable platform for multiplexed quantum memories
- Light: Science & Applications Vol. 15, Issue 1, Pages: 208-217(2026)
- Affiliations：
  
  1.Department of Physics, Humboldt-Universität zu Berlin, Berlin 12489, Germany
  2.Department of Fiber Photonics, Leibniz Institute of Photonic Technology, Jena 07745, Germany
  3.5th Institute of Physics, University of Stuttgart, Stuttgart 70569, Germany
  4.Otto Schott Institute of Material Research, Jena 07743, Germany
- Author bio：
  
  Esteban Gómez-López (egomez@physik.hu-berlin.de)
- Funds：
- DOI：10.1038/s41377-025-02085-5
  CLC：
- Received：25 April 2025，
  
  Revised：2025-09-17，
  
  Accepted：09 October 2025，
  
  Published Online：01 January 2026，
  
  Published：31 January 2026
- Accepted：
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Gómez-López, E. et al. Light storage in light cages: a scalable platform for multiplexed quantum memories. Light: Science & Applications, 15, 208-217 (2026).
DOI：

Gómez-López, E. et al. Light storage in light cages: a scalable platform for multiplexed quantum memories. Light: Science & Applications, 15, 208-217 (2026). DOI： 10.1038/s41377-025-02085-5.

摘要

Abstract

Quantum memories are essential for photonic quantum technologies

enabling long-distance quantum communication and serving as delay units in quantum computing. Hot atomic vapors using electromagnetically induced transparency provide a simple platform with second-long photon storage capabilities. Light-guiding structures enhance performance

but current hollow-core fiber waveguides face significant limitations in filling time

physical size

fabrication versatility

and large-scale integration potential. In this work

we demonstrate the storage of attenuated coherent light pulses in a cesium (Cs) quantum memory based on a 3D-nanoprinted hollow-core waveguide

known as a light cage (LC)

with several hundred nanoseconds of storage times. Leveraging the versatile fabrication process

we successfully integrated multiple LC memories onto a single chip within a Cs vapor cell

achieving consistent performance across all devices. We conducted a detailed investigation into storage efficiency

analyzing memory lifetime and bandwidth. These results represent a significant advancement toward spatially multiplexed quantum memories and have the potential to elevate memory integration to unprecedented levels. We anticipate applications in parallel single-photon synchronization for quantum repeater nodes and photonic quantum computing platforms.

关键词

Keywords

references

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