Fig. 3: Near-unity concurrence from a nanowire quantum dot.
From: Oscillating photonic Bell state from a semiconductor quantum dot for quantum key distribution
a Concurrence from reconstructed density matrices as a function of time delay for experimental data and simulated data with time windows of 50 ps. Data is presented for the nanowire quantum dot excited under two-photon resonant excitation at π-pulse using both single photon avalanche diodes (SPADs) and superconducting nanowire single photon detectors (SNSPDs). The shaded regions represent one standard deviation. b Percentage of total coincidence counts as a function of time delay.
