A CHSH-game-inspired local rotation of the Pauli basis, applied qubit by qubit, improves the stabilizer approximation energy for two toy Hamiltonians.
The corresponding new stabilizer state is simply [15] |Ψ ′⟩ = I ⊗ R† y( π 4 )|Ψ ⟩
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Improving stabilizer approximation with quantum strategy
A CHSH-game-inspired local rotation of the Pauli basis, applied qubit by qubit, improves the stabilizer approximation energy for two toy Hamiltonians.