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Phys Rev Lett. 2010 Mar 26;104(12):123605. Epub 2010 Mar 26.

Quantum interference of tunably indistinguishable photons from remote organic molecules.

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Laboratory of Physical Chemistry and optETH, ETH Zurich, CH-8093 Zurich, Switzerland.


We demonstrate two-photon interference using two remote single molecules as bright solid-state sources of indistinguishable photons. By varying the transition frequency and spectral width of one molecule, we tune and explore the effect of photon distinguishability. We discuss future improvements on the brightness of single-photon beams, their integration by large numbers on chips, and the extension of our experimental scheme to coupling and entanglement of distant molecules.

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