Beyond MP2 initialization for unitary coupled cluster quantum circuits
Fuente:
arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2023
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| Accesso online: | |
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| _version_ | 1866913585606688768 |
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| author | Hirsbrunner, Mark R. Chamaki, Diana Mullinax, J. Wayne Tubman, Norm M. |
| author_facet | Hirsbrunner, Mark R. Chamaki, Diana Mullinax, J. Wayne Tubman, Norm M. |
| contents | The unitary coupled cluster (UCC) ansatz is a promising tool for achieving high-precision results using the variational quantum eigensolver (VQE) algorithm in the NISQ era. However, results on quantum hardware are thus far very limited and simulations have only accessed small system sizes. We advance the state of the art of UCC simulations by utilizing an efficient sparse wavefunction circuit solver and studying systems up to 64 qubits. Here we report results obtained using this solver that demonstrate the power of the UCC ansatz and address pressing questions about optimal initial parameterizations and circuit construction, among others. Our approach enables meaningful benchmarking of the UCC ansatz, a crucial step in assessing the utility of VQE for achieving quantum advantage. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2301_05666 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Beyond MP2 initialization for unitary coupled cluster quantum circuits Hirsbrunner, Mark R. Chamaki, Diana Mullinax, J. Wayne Tubman, Norm M. Quantum Physics Strongly Correlated Electrons Chemical Physics The unitary coupled cluster (UCC) ansatz is a promising tool for achieving high-precision results using the variational quantum eigensolver (VQE) algorithm in the NISQ era. However, results on quantum hardware are thus far very limited and simulations have only accessed small system sizes. We advance the state of the art of UCC simulations by utilizing an efficient sparse wavefunction circuit solver and studying systems up to 64 qubits. Here we report results obtained using this solver that demonstrate the power of the UCC ansatz and address pressing questions about optimal initial parameterizations and circuit construction, among others. Our approach enables meaningful benchmarking of the UCC ansatz, a crucial step in assessing the utility of VQE for achieving quantum advantage. |
| title | Beyond MP2 initialization for unitary coupled cluster quantum circuits |
| topic | Quantum Physics Strongly Correlated Electrons Chemical Physics |
| url | https://arxiv.org/abs/2301.05666 |