VQE — Variational Quantum Eigensolver

Find ground state energy by minimizing ⟨ψ(θ)|H|ψ(θ)⟩ over circuit parameters

HAMILTONIAN (H₂ molecule)
H = g₀·I + g₁·Z₀ + g₂·Z₁ + g₃·Z₀Z₁ + g₄·Y₀Y₁ + g₅·X₀X₁ g₀ = -0.4804 g₁ = +0.3435 g₂ = -0.4347 g₃ = +0.5716 g₄ = +0.0910 g₅ = +0.0910
ANSATZ PARAMETERS
CURRENT ⟨E⟩
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Exact ground state: −1.1361 Ha
OPTIMIZATION LOG
Ready. Press "Run Optimizer".
ENERGY LANDSCAPE
OPTIMIZATION HISTORY
Ansatz: Ry(θ₁)|0⟩ ⊗ Ry(θ₂)|0⟩ → CNOT → Ry(θ₃)⊗Ry(θ₄)
2-qubit UCCSD-inspired hardware-efficient ansatz