Hannover 2020 – wissenschaftliches Programm
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SYAD: Symposium SAMOP Dissertation Prize 2020
SYAD 1: SAMOP Dissertation Prize
SYAD 1.4: Hauptvortrag
Dienstag, 10. März 2020, 12:30–13:00, e415
Coherent Coupling of a Single Molecule to a Fabry-Perot Microcavity — •Daqing Wang — Institute of Physics, University of Kassel, 34132 Kassel, Germany
Efficient coupling of light with a quantum emitter is a central concept in the fundamentals of light-matter interaction and it is a prerequisite for deterministic quantum information transfer between distant nodes in a quantum network.
In this talk, we present the experimental realization of nearly perfect coupling of light with an organic molecule enabled by a Fabry-Perot microcavity. The microcavity consists of a planar mirror, and a curved micromirror fabricated using focused-ion-beam milling with a radius of curvature (ROC) in the order of 10 µm. The small ROC allows the operation of an open, tunable and scannable microcavity with a mode volume as small as 4λ3.
As a result, we observe a strong, coherent interaction of the 00-zero-phonon-line (00ZPL) transition of a dibenzoterrylene molecule with the cavity mode at 4.2 Kelvin. The coupling accelerates the 00ZPL transition by a factor of 38, gives rise to several unprecedented effects in the molecular system. First, the resonant scattering of the molecule interferes destructively with the cavity field in the forward direction, attenuating the cavity transmission by more than 99%. Second, the system responds nonlinearly at the level of single-photons, introducing strong correlations to the photons traversing the system. Furthermore, we demonstrate the efficient interaction of the system with single antibunched photons emitted by a second molecule.