Doubling the Size of Quantum Simulators by Entanglement Forging
Andrew Eddins, Mario E. Motta, Tanvi P. Gujarati, Sergey Bravyi, Antonio Mezzacapo, Charles F. Hadfield, Sarah Sheldon · PRX Quantum · 2022
A method of classically forged entanglement is used to simulate a 2N-qubit system with only N qubits, which is illustrated on the case of 5 qubits simulating 10 spin orbitals of the ground state of the water molecule.