Classical simulators as quantum error mitigators via circuit cutting

• URL: http://arxiv.org/abs/2212.07335v1
• Date: Wed, 14 Dec 2022 16:54:35 GMT
• Title: Classical simulators as quantum error mitigators via circuit cutting
• Authors: Ji Liu, Alvin Gonzales and Zain H. Saleem
• Abstract summary: We introduce an error mitigation framework that mitigates errors in a quantum circuit using circuit cutting. Our technique involves cutting the circuit in such a way that we run the circuit that needs to be executed on the quantum hardware. We perform error mitigation qubit by qubit and then provide a way to combine the different probabilities from each of the individual qubit error mitigation runs.
• Score: 15.335377418439064
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We introduce an error mitigation framework that mitigates errors in a quantum circuit using circuit cutting. Our framework can be implemented in polynomial time for a wide variety of quantum circuits. Our technique involves cutting the circuit in such a way that we run the circuit that needs to be executed on the quantum hardware whereas the error mitigation circuit is run on a simulator. We perform error mitigation qubit by qubit and then provide a way to combine the different probabilities from each of the individual qubit error mitigation runs such that the full circuit is error mitigated. We apply our framework to the VQE hardware-efficient ansatz acheiving estimated ground state energies very close to the noise-free simulation results.

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