Dynamics of the Energy Relaxation and Decoherence of a Photon-Atom Bound State in an Anisotropic Photonic Crystal

Figure 3

(a) Polarization 𝑃𝑧(𝑡)=𝜌₁₀(𝑡)+𝜌₀₁(𝑡) and (b) von Neumann entropy 𝑆(𝑡)=−Tr[𝜌(𝑡)log𝜌(𝑡)]=−𝜆₊log𝜆₊−𝜆₋log𝜆₋ of the non-Markovian (𝛿/𝛽<0) and Markovian (𝛿/𝛽=2) systems.

(a)

(b)