The Coherence Time of Infinite Quantum Well

The relationship among the Coherence time (CT) τ, the Variation frequency λ, the energy separation ΔE and coupling constant α in quantum well was investigated using Pekar type variational method. The results indicated that the Coherence time τ is positively proportional to the Variation frequency λ, but the energy separation ΔE and coupling constant α are negatively correlated with the Coherence time τ. When ΔE is more than 10ev, and when α is more than 5, τ decreases sharply.