Requirements on bit resolution in optical Ising machine implementations with analog spin variables
Abstract Optical Ising machines have emerged as a promising dynamical hardware solver for computational hard optimization problems. These Ising machines typically require an optical modulator to represent the analog spin variables of these problems. However, modern day optical modulators have a rela...
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| Format: | Article |
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Nature Portfolio
2025-01-01
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| Series: | Communications Physics |
| Online Access: | https://doi.org/10.1038/s42005-024-01919-9 |
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| _version_ | 1841559363140976640 |
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| author | Toon Sevenants Guy Van der Sande Guy Verschaffelt |
| author_facet | Toon Sevenants Guy Van der Sande Guy Verschaffelt |
| author_sort | Toon Sevenants |
| collection | DOAJ |
| description | Abstract Optical Ising machines have emerged as a promising dynamical hardware solver for computational hard optimization problems. These Ising machines typically require an optical modulator to represent the analog spin variables of these problems. However, modern day optical modulators have a relatively low modulation resolution. We therefore investigate how the low bit-resolution of optical hardware influences the performance of this type of computing platform. Based on numerical simulations, we determine the minimum required bit-resolution of an optical Ising machine for different benchmark problems of different sizes. Our study shows that a limited bit-resolution of 8bit is sufficient for the optical modulator. We also observe that the use of a 1bit-resolution modulator significantly improves the performance of the Ising machine across all considered benchmark problems. |
| format | Article |
| id | doaj-art-61983dbe586d4c6eb76831cfe888e6fd |
| institution | Kabale University |
| issn | 2399-3650 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Communications Physics |
| spelling | doaj-art-61983dbe586d4c6eb76831cfe888e6fd2025-01-05T12:32:48ZengNature PortfolioCommunications Physics2399-36502025-01-01811810.1038/s42005-024-01919-9Requirements on bit resolution in optical Ising machine implementations with analog spin variablesToon Sevenants0Guy Van der Sande1Guy Verschaffelt2Applied Physics Research Group, Vrije Universiteit BrusselApplied Physics Research Group, Vrije Universiteit BrusselApplied Physics Research Group, Vrije Universiteit BrusselAbstract Optical Ising machines have emerged as a promising dynamical hardware solver for computational hard optimization problems. These Ising machines typically require an optical modulator to represent the analog spin variables of these problems. However, modern day optical modulators have a relatively low modulation resolution. We therefore investigate how the low bit-resolution of optical hardware influences the performance of this type of computing platform. Based on numerical simulations, we determine the minimum required bit-resolution of an optical Ising machine for different benchmark problems of different sizes. Our study shows that a limited bit-resolution of 8bit is sufficient for the optical modulator. We also observe that the use of a 1bit-resolution modulator significantly improves the performance of the Ising machine across all considered benchmark problems.https://doi.org/10.1038/s42005-024-01919-9 |
| spellingShingle | Toon Sevenants Guy Van der Sande Guy Verschaffelt Requirements on bit resolution in optical Ising machine implementations with analog spin variables Communications Physics |
| title | Requirements on bit resolution in optical Ising machine implementations with analog spin variables |
| title_full | Requirements on bit resolution in optical Ising machine implementations with analog spin variables |
| title_fullStr | Requirements on bit resolution in optical Ising machine implementations with analog spin variables |
| title_full_unstemmed | Requirements on bit resolution in optical Ising machine implementations with analog spin variables |
| title_short | Requirements on bit resolution in optical Ising machine implementations with analog spin variables |
| title_sort | requirements on bit resolution in optical ising machine implementations with analog spin variables |
| url | https://doi.org/10.1038/s42005-024-01919-9 |
| work_keys_str_mv | AT toonsevenants requirementsonbitresolutioninopticalisingmachineimplementationswithanalogspinvariables AT guyvandersande requirementsonbitresolutioninopticalisingmachineimplementationswithanalogspinvariables AT guyverschaffelt requirementsonbitresolutioninopticalisingmachineimplementationswithanalogspinvariables |