Digital quantum simulation of cosmological particle creation with IBM quantum computers
Abstract We use digital quantum computing to simulate the creation of particles in a dynamic spacetime. We consider a system consisting of a minimally coupled massive quantum scalar field in a spacetime undergoing homogeneous and isotropic expansion, transitioning from one stationary state to anothe...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-01-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-87015-6 |
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| author | Marco D. Maceda Carlos Sabín |
| author_facet | Marco D. Maceda Carlos Sabín |
| author_sort | Marco D. Maceda |
| collection | DOAJ |
| description | Abstract We use digital quantum computing to simulate the creation of particles in a dynamic spacetime. We consider a system consisting of a minimally coupled massive quantum scalar field in a spacetime undergoing homogeneous and isotropic expansion, transitioning from one stationary state to another through a brief inflationary period. We simulate two vibration modes, positive and negative for a given field momentum, by devising a quantum circuit that implements the time evolution. With this circuit, we study the number of particles created after the universe expands at a given rate, both by simulating the circuit and by actual experimental implementation on IBM quantum computers, consisting of hundreds of quantum gates. We find that state-of-the-art error mitigation techniques are useful to improve the estimation of the number of particles and the fidelity of the state. |
| format | Article |
| id | doaj-art-2dd846fe03aa4629a9c73ac444981032 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-2dd846fe03aa4629a9c73ac4449810322025-02-02T12:16:26ZengNature PortfolioScientific Reports2045-23222025-01-0115111010.1038/s41598-025-87015-6Digital quantum simulation of cosmological particle creation with IBM quantum computersMarco D. Maceda0Carlos Sabín1Departamento de Física Teórica, Universidad Autónoma de MadridDepartamento de Física Teórica, Universidad Autónoma de MadridAbstract We use digital quantum computing to simulate the creation of particles in a dynamic spacetime. We consider a system consisting of a minimally coupled massive quantum scalar field in a spacetime undergoing homogeneous and isotropic expansion, transitioning from one stationary state to another through a brief inflationary period. We simulate two vibration modes, positive and negative for a given field momentum, by devising a quantum circuit that implements the time evolution. With this circuit, we study the number of particles created after the universe expands at a given rate, both by simulating the circuit and by actual experimental implementation on IBM quantum computers, consisting of hundreds of quantum gates. We find that state-of-the-art error mitigation techniques are useful to improve the estimation of the number of particles and the fidelity of the state.https://doi.org/10.1038/s41598-025-87015-6Quantum simulationQuantum computation |
| spellingShingle | Marco D. Maceda Carlos Sabín Digital quantum simulation of cosmological particle creation with IBM quantum computers Scientific Reports Quantum simulation Quantum computation |
| title | Digital quantum simulation of cosmological particle creation with IBM quantum computers |
| title_full | Digital quantum simulation of cosmological particle creation with IBM quantum computers |
| title_fullStr | Digital quantum simulation of cosmological particle creation with IBM quantum computers |
| title_full_unstemmed | Digital quantum simulation of cosmological particle creation with IBM quantum computers |
| title_short | Digital quantum simulation of cosmological particle creation with IBM quantum computers |
| title_sort | digital quantum simulation of cosmological particle creation with ibm quantum computers |
| topic | Quantum simulation Quantum computation |
| url | https://doi.org/10.1038/s41598-025-87015-6 |
| work_keys_str_mv | AT marcodmaceda digitalquantumsimulationofcosmologicalparticlecreationwithibmquantumcomputers AT carlossabin digitalquantumsimulationofcosmologicalparticlecreationwithibmquantumcomputers |