Probing non-equilibrium topological order on a quantum processor
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| Main Authors: | , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866912673116979200 |
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| author | Will, M. Cochran, T. A. Rosenberg, E. Jobst, B. Eassa, N. M Roushan, P. Knap, M. Gammon-Smith, A. Pollmann, F. |
| author_facet | Will, M. Cochran, T. A. Rosenberg, E. Jobst, B. Eassa, N. M Roushan, P. Knap, M. Gammon-Smith, A. Pollmann, F. |
| contents | Out-of-equilibrium phases in many-body systems constitute a new paradigm in quantum matter - they exhibit dynamical properties that may otherwise be forbidden by equilibrium thermodynamics. Among these non-equilibrium phases are periodically driven (Floquet) systems [1-5], which are generically difficult to simulate classically because of their high entanglement. Here we realize a Floquet topologically ordered state theoretically proposed in ref. [6], on an array of superconducting qubits. We image the characteristic dynamics of its chiral edge modes and characterize its emergent anyonic excitations. Devising an interferometric algorithm allows us to introduce and measure a bulk topological invariant to probe the dynamical transmutation of anyons for system sizes up to 58 qubits. Our work demonstrates that quantum processors can provide key insights into the thus-far largely unexplored landscape of highly entangled non-equilibrium phases of matter. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_18461 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Probing non-equilibrium topological order on a quantum processor Will, M. Cochran, T. A. Rosenberg, E. Jobst, B. Eassa, N. M Roushan, P. Knap, M. Gammon-Smith, A. Pollmann, F. Quantum Physics Other Condensed Matter Out-of-equilibrium phases in many-body systems constitute a new paradigm in quantum matter - they exhibit dynamical properties that may otherwise be forbidden by equilibrium thermodynamics. Among these non-equilibrium phases are periodically driven (Floquet) systems [1-5], which are generically difficult to simulate classically because of their high entanglement. Here we realize a Floquet topologically ordered state theoretically proposed in ref. [6], on an array of superconducting qubits. We image the characteristic dynamics of its chiral edge modes and characterize its emergent anyonic excitations. Devising an interferometric algorithm allows us to introduce and measure a bulk topological invariant to probe the dynamical transmutation of anyons for system sizes up to 58 qubits. Our work demonstrates that quantum processors can provide key insights into the thus-far largely unexplored landscape of highly entangled non-equilibrium phases of matter. |
| title | Probing non-equilibrium topological order on a quantum processor |
| topic | Quantum Physics Other Condensed Matter |
| url | https://arxiv.org/abs/2501.18461 |