Efficient variational quantum simulator incorporating active error minimization
One of the key applications for quantum computers will be the simulation of other quantum systems that arise in chemistry, materials science, etc., in order to accelerate the process of discovery. It is important to ask the following question: Can this simulation be achieved using near-future quantu...
| Main Authors: | , |
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| Format: | Journal article |
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American Physical Society
2017
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| _version_ | 1826273277494951936 |
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| author | Benjamin, S Li, Y |
| author_facet | Benjamin, S Li, Y |
| author_sort | Benjamin, S |
| collection | OXFORD |
| description | One of the key applications for quantum computers will be the simulation of other quantum systems that arise in chemistry, materials science, etc., in order to accelerate the process of discovery. It is important to ask the following question: Can this simulation be achieved using near-future quantum processors, of modest size and under imperfect control, or must it await the more distant era of large-scale fault-tolerant quantum computing? Here, we propose a variational method involving closely integrated classical and quantum coprocessors. We presume that all operations in the quantum coprocessor are prone to error. The impact of such errors is minimized by boosting them artificially and then extrapolating to the zero-error case. In comparison to a more conventional optimized Trotterization technique, we find that our protocol is efficient and appears to be fundamentally more robust against error accumulation. |
| first_indexed | 2024-03-06T22:25:45Z |
| format | Journal article |
| id | oxford-uuid:569dec91-afef-471b-a87c-fc4d522635a7 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T22:25:45Z |
| publishDate | 2017 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:569dec91-afef-471b-a87c-fc4d522635a72022-03-26T16:51:26ZEfficient variational quantum simulator incorporating active error minimizationJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:569dec91-afef-471b-a87c-fc4d522635a7Symplectic Elements at OxfordAmerican Physical Society2017Benjamin, SLi, YOne of the key applications for quantum computers will be the simulation of other quantum systems that arise in chemistry, materials science, etc., in order to accelerate the process of discovery. It is important to ask the following question: Can this simulation be achieved using near-future quantum processors, of modest size and under imperfect control, or must it await the more distant era of large-scale fault-tolerant quantum computing? Here, we propose a variational method involving closely integrated classical and quantum coprocessors. We presume that all operations in the quantum coprocessor are prone to error. The impact of such errors is minimized by boosting them artificially and then extrapolating to the zero-error case. In comparison to a more conventional optimized Trotterization technique, we find that our protocol is efficient and appears to be fundamentally more robust against error accumulation. |
| spellingShingle | Benjamin, S Li, Y Efficient variational quantum simulator incorporating active error minimization |
| title | Efficient variational quantum simulator incorporating active error minimization |
| title_full | Efficient variational quantum simulator incorporating active error minimization |
| title_fullStr | Efficient variational quantum simulator incorporating active error minimization |
| title_full_unstemmed | Efficient variational quantum simulator incorporating active error minimization |
| title_short | Efficient variational quantum simulator incorporating active error minimization |
| title_sort | efficient variational quantum simulator incorporating active error minimization |
| work_keys_str_mv | AT benjamins efficientvariationalquantumsimulatorincorporatingactiveerrorminimization AT liy efficientvariationalquantumsimulatorincorporatingactiveerrorminimization |