Turning a molecule into a coherent two-level quantum system

Journal article

Publication Details

Author(s): Wang D, Kelkar H, Martin-Cano D, Rattenbacher D, Shkarin A, Utikal T, Götzinger S, Sandoghdar V
Journal: Nature Physics
Publication year: 2019
Volume: 15
Journal issue: 5
Pages range: 483-489
ISSN: 1745-2473
eISSN: 1745-2481


The use of molecules in quantum optical applications has been hampered by incoherent internal vibrations and other phononic interactions with their environment. Here we show that an organic molecule placed into an optical microcavity behaves as a coherent two-level quantum system. This allows the observation of 99% extinction of a laser beam by a single molecule, saturation with less than 0.5 photons and non-classical generation of few-photons super-bunched light. Furthermore, we demonstrate efficient interaction of the molecule–microcavity system with single photons generated by a second molecule in a distant laboratory. Our achievements represent an important step towards linear and nonlinear quantum photonic circuits based on organic platforms.

FAU Authors / FAU Editors

Götzinger, Stephan Prof. Dr.
Professur für Physik
Sandoghdar, Vahid Prof. Dr.
Lehrstuhl für Experimentalphysik (Alexander-von-Humboldt-Professur)

External institutions with authors

Helmholtz-Zentrum Berlin für Materialien und Energie (HZB)

How to cite

Wang, D., Kelkar, H., Martin-Cano, D., Rattenbacher, D., Shkarin, A., Utikal, T.,... Sandoghdar, V. (2019). Turning a molecule into a coherent two-level quantum system. Nature Physics, 15(5), 483-489. https://dx.doi.org/10.1038/s41567-019-0436-5

Wang, Daqing, et al. "Turning a molecule into a coherent two-level quantum system." Nature Physics 15.5 (2019): 483-489.


Last updated on 2019-17-05 at 13:23