QUBIT STATE
θ (polar)0°
φ (azimuthal)0°
|⟨0|ψ⟩|²1.00
|⟨1|ψ⟩|²0.00
Coherence |ρ₀₁|0.00
Purity Tr(ρ²)1.00
ENVIRONMENT
INITIAL STATE
CONTROLS
POINTER STATES
Pointer states: eigenstates of interaction Hamiltonian H_int
For σ_z coupling → |0⟩,|1⟩ are pointer states
Superpositions decohere → classical mixture
τ_D = 1/γ for pure dephasing
For σ_z coupling → |0⟩,|1⟩ are pointer states
Superpositions decohere → classical mixture
τ_D = 1/γ for pure dephasing
Decoherence time τ_D∞