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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2504.20824 |
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| _version_ | 1866916712736096256 |
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| author | Melzer, Christian Schuster, Stephan Millán, Diego Alberto Olvera Hilder, Janine Poschinger, Ulrich Jansen, Karl Schmidt-Kaler, Ferdinand |
| author_facet | Melzer, Christian Schuster, Stephan Millán, Diego Alberto Olvera Hilder, Janine Poschinger, Ulrich Jansen, Karl Schmidt-Kaler, Ferdinand |
| contents | Simulations in high-energy physics are currently emerging as an application of noisy intermediate-scale quantum (NISQ) computers. In this work, we explore the multi-flavor lattice Schwinger model - a toy model inspired by quantum chromodynamics - in one spatial dimension and with nonzero chemical potential by means of variational quantum simulation on a shuttling-based trapped-ion quantum processor. This fermionic problem becomes intractable for classical numerical methods even for small system sizes due to the notorious sign problem. We employ a parametric quantum circuit executed on our quantum processor to identify ground states in different parameter regimes of the model, mapping out a quantum phase transition which is the hallmark feature of the model. The resulting states are analyzed via quantum state tomography, to reveal how characteristic properties such as correlations in the output state change across the phase transition. Moreover, we use the results to determine the phase boundaries of the model. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_20824 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Variational Quantum Simulation of the Interacting Schwinger Model on a Trapped-Ion Quantum Processor Melzer, Christian Schuster, Stephan Millán, Diego Alberto Olvera Hilder, Janine Poschinger, Ulrich Jansen, Karl Schmidt-Kaler, Ferdinand Quantum Physics High Energy Physics - Lattice Simulations in high-energy physics are currently emerging as an application of noisy intermediate-scale quantum (NISQ) computers. In this work, we explore the multi-flavor lattice Schwinger model - a toy model inspired by quantum chromodynamics - in one spatial dimension and with nonzero chemical potential by means of variational quantum simulation on a shuttling-based trapped-ion quantum processor. This fermionic problem becomes intractable for classical numerical methods even for small system sizes due to the notorious sign problem. We employ a parametric quantum circuit executed on our quantum processor to identify ground states in different parameter regimes of the model, mapping out a quantum phase transition which is the hallmark feature of the model. The resulting states are analyzed via quantum state tomography, to reveal how characteristic properties such as correlations in the output state change across the phase transition. Moreover, we use the results to determine the phase boundaries of the model. |
| title | Variational Quantum Simulation of the Interacting Schwinger Model on a Trapped-Ion Quantum Processor |
| topic | Quantum Physics High Energy Physics - Lattice |
| url | https://arxiv.org/abs/2504.20824 |