Fig. 4: Single-photon transmission.
From: A tuneable telecom wavelength entangled light emitting diode deployed in an installed fibre network
Second-order autocorrelation measurement result for XX photons a in the laboratory and b after transmission over 15 km of installed fibre, multiplexed with classical data traffic. Data acquisition times were 5 min and 30 min, respectively. The red curves show a theoretical fitting function which is used to extract the displayed g(2)(0) values and corresponding background contribution. Displayed error bars are propagated from Poissonian counting statistics.
