Figure 5: Reconstructed density matrix ρ plotted as a bar chart. | Nature Communications

Figure 5: Reconstructed density matrix ρ plotted as a bar chart.

From: Time-bin entangled photons from a quantum dot

Figure 5

(a) Real part. (b) Imaginary part. The reduced value of 0.44 for the 00 (early-early) and 11 (late–late) populations is a consequence of the double excitations that appear as 01 (early–late) and 10 (late–early) populations. The reduced value of the off-diagonal elements (coherences) of about 0.24 comes from the lack of finite coherence of the excitation and emission processes in the quantum dot.

Back to article page