data

These circuits are to reproduce the results of Fig. 4f (\Delta \mathcal{C}^{(4)}) of the paper "Practical Quantum Advantage in Computing Local Observables". The files are meant to be used in the following way. Imagine one had some `cirq` backend which could run on 65 qubits. Then, the results are obtained as follows: import numpy as np import qsimcirq import cirq import pickle simulator = qsimcirq.QSimSimulator() C4_circuits = pickle.load(open('circuits_cycle_23_1020_iswaps', 'rb')) C4_mc_circuits = pickle.load(open('circuits_cycle_23_1020_iswaps_mc_list', 'rb')) msmt_qubit = cirq.GridQubit(10, 9) C4 = np.array([simulator.simulate_expectation_values(C[:-1], observables=[cirq.Z.on(msmt_qubit)])[0].real for C in C4_circuits]) C4_mc = np.array([simulator.simulate_expectation_values(C[:-1], observables=[cirq.Z.on(msmt_qubit)])[0].real for MClist in C4_mc_circuits for C in MClist]).reshape((20, 50)).mean(axis=0) answer = C4 - C4_mc