Structure optimization for parameterized quantum circuits
| Autorzy | Ostaszewski M.; Grant E.; Benedetti M. |
|---|---|
| Tytuł | Structure optimization for parameterized quantum circuits |
| Czasopismo | Quantum |
| Rok | 2021 |
| Status | Published |
| Tom | 5 |
| DOI | https://doi.org/10.22331/q-2021-01-28-391 |
| URL | https://quantum-journal.org/papers/q-2021-01-28-391/ |
| Abstrakt | <p><span style="font-family:sans-serif; font-size:15.8658px">We propose an efficient method for simultaneously optimizing both the structure</span><span style="font-family:sans-serif; font-size:15.8658px">and parameter values of quantum circuits with only a small computational overhead.</span><span style="font-family:sans-serif; font-size:15.8658px">Shallow circuits that use structure optimization perform significantly better than cir-</span><span style="font-family:sans-serif; font-size:15.8658px">cuits that use parameter updates alone, making this method particularly suitable for</span><span style="font-family:sans-serif; font-size:15.8658px">noisy intermediate-scale quantum computers. We demonstrate the method for optimiz-</span><span style="font-family:sans-serif; font-size:15.8658px">ing a variational quantum eigensolver for finding the ground states of Lithium Hydride</span><span style="font-family:sans-serif; font-size:15.8658px">and the Heisenberg model in simulation, and for finding the ground state of Hydrogen</span><span style="font-family:sans-serif; font-size:15.8658px">gas on the IBM Melbourne quantum computer.</span></p> |