All-optically tunable buffer for single photons.

Research paper by Stéphane S Clemmen, Alessandro A Farsi, Sven S Ramelow, Alexander L AL Gaeta

Indexed on: 02 May '18Published on: 02 May '18Published in: Optics letters


We demonstrate a photon buffer for quantum communication systems via a quantum frequency conversion-dispersion technique based on Bragg scattering four-wave mixing. The all-fiber setup is capable of imparting all-optical and continuously tunable delays onto single photons with minimal photon noise and absorption. Tunable delays up to 23 times the photon duration are demonstrated with on/off efficiencies as high as 55%.