Indistinguishable photons from a diode

Indistinguishable entangled photons generated by a light-emitting diode.

A linear optical quantum computer relies on interference between photonic qubits for logic, and entanglement for near-deterministic operation. Here we measure the interference and entanglement properties of photons emitted by a quantum dot embedded within a light-emitting diode. We show that pairs of simultaneously generated photons are entangled, and indistinguishable from subsequently generat...

Indistinguishable photons from a single molecule.

We report the results of coincidence counting experiments at the output, of a Michelson interferometer using the zero-phonon-line emission of a single molecule at 1.4 K. Under continuous wave excitation, we observe the absence of coincidence counts as an indication of two-photon interference. This corresponds to the observation of Hong-Ou-Mandel correlations and proves the suitability of the ze...

Indistinguishable photons from separated silicon-vacancy centers in diamond.

We demonstrate that silicon-vacancy (SiV) centers in diamond can be used to efficiently generate coherent optical photons with excellent spectral properties. We show that these features are due to the inversion symmetry associated with SiV centers. The generation of indistinguishable single photons from separated emitters at 5 K is demonstrated in a Hong-Ou-Mandel interference experiment. Prosp...

Indistinguishable near-infrared single photons from an individual organic molecule

Indistinguishable and efficient single photons from a quantum dot in a planar nanobeam waveguide

Gabija Kiršanskė, Henri Thyrrestrup, Raphaël S. Daveau, Chris L. Dreeßen, Tommaso Pregnolato, Leonardo Midolo, Petru Tighineanu, Søren Stobbe, Rüdiger Schott, Arne Ludwig, Andreas D. Wieck, Suk In Park, Jin D. Song, Andreas V. Kuhlmann, Immo Söllner, Matthias C. Löbl, Richard J. Warburton, and Peter Lodahl Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, DK-2100 Copenhagen, Denma...