Ultralong coherence times in the purely electronic zero-phonon line emission of single molecules

Details Ultralong coherence times in the purely electronic zero-phonon line emission of single molecules Ultralong coherence times in the purely electronic zero-phonon line emission of single molecules

2004-06-19

arxiv.org/abs/quant-ph/0406138v1

Physics

Quantum Physics

to appear in Applied Physics Letters

Scientific paper

10.1063/1.1779351

We report the observation of ultralong coherence times in the purely electronic zero-phonon line emission of single terrylenediimide molecules at 1.4 K. Vibronic excitation and spectrally resolved detection with a scanning Fabry-Perot spectrum analyzer were used to measure a linewidth of 65 MHz. This is within a factor of 1.6 of the transform limit. It therefore indicates that single molecule emission may be suited for applications in linear optics quantum computation. Additionally it is shown that high resolution spectra taken with the spectrum analyzer allow for the investigation of fast spectral dynamics in the emission of a single molecule.

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