How can light emitted by individual quantum systems be collected more efficiently? Researchers from the research group of Prof. Dr. Friedemann Reinhard at the Institute of Physics at the University of Rostock have taken an important step towards answering this question. In their latest study, they demonstrate that the natural interface between diamond and air can serve as a highly efficient photon antenna, significantly improving light extraction from nitrogen-vacancy (NV) centres in diamond—without requiring complex nanostructuring.
The findings open new opportunities for the development of more sensitive quantum sensors as well as future applications in quantum communication and precision metrology. At the same time, the work exemplifies the interdisciplinary research approach of the Department of Life, Light & Matter (LL&M). By combining physics, materials science and state-of-the-art analytical methods, the department develops innovative approaches to investigate materials and biological systems at the atomic and molecular scale—bringing its vision of Atomic & Molecular Scale Sensing into practice.
Publication:
Paul Weinbrenner, Aina Lopez Benet, İdil Gözel und Friedemann Reinhard: Harnessing the Diamond–Air Interface as an Efficient Photon Antenna for Solid-State Emitters. Nano Letters, 2026, Band 26 (3), S. 990–996. DOI: 10.1021/acs.nanolett.5c04935.