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Q: Fachverband Quantenoptik und Photonik
Q 39: Quantum Optics & Nano-Optics
Q 39.4: Talk
Wednesday, March 8, 2023, 15:15–15:30, F342
Towards interfacing a multiplexed warm vapor quantum memory with single photons from cavity enhanced spontaneous parametric down-conversion — •Leon Meßner1,2, Elizabeth Robertson2,3, Luisa Esguerra2,3, Helen Chrzanowski2, and Janik Wolters2,3 — 1Institut für Physik, Humboldt-Universität zu Berlin, Berlin, Germany — 2Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR), Institute of Optical Sensor Systems, Berlin, Germany — 3Technische Universität Berlin, Institut für Optik und Atomare Physik, Berlin, Germany
Recent investigation [1] shows that a significant speed-up in intercontinental quantum key distribution is achievable by having quantum memories with on the order of 103 randomly accessible storage modes. We present our latest results on a spatially multiplexed warm vapor EIT memory [2] with the ability to scale beyond this number, while having modest technological requirements. In future, this will allow isolated deployment away from laboratory infrastructure and facilitate remote operation on satellites and similarly insular locations. To gain a deeper understanding of the challenges presented by integrating these memories into quantum networks, we are planning to interface them with single photons generated by spontaneous parametric down-conversion inside a monolithic cavity [3,4].
[1] Wallnöfer, J. et al., Commun Phys 5, 169 (2022)
[2] Esguerra, L. et al., arXiv:2203.06151 [quant-ph] (2022)
[3] Mottola, R. et al., Optics Express 28, 3159-3170 (2020)
[4] Buser, G. et al., PRX Quantum 3, 020349 (2022)