Efficient quantum information probes of nonequilibrium quantum criticality
Abstract Quantum information-based approaches, in particular the fidelity, have been flexible probes for phase boundaries of quantum matter. A major hurdle to a more widespread application of fidelity and other quantum information measures to strongly correlated quantum materials is the inaccessibil...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-01-01
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| Series: | npj Quantum Information |
| Online Access: | https://doi.org/10.1038/s41534-022-00671-8 |
| _version_ | 1797952440010539008 |
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| author | Miguel M. Oliveira Pedro Ribeiro Stefan Kirchner |
| author_facet | Miguel M. Oliveira Pedro Ribeiro Stefan Kirchner |
| author_sort | Miguel M. Oliveira |
| collection | DOAJ |
| description | Abstract Quantum information-based approaches, in particular the fidelity, have been flexible probes for phase boundaries of quantum matter. A major hurdle to a more widespread application of fidelity and other quantum information measures to strongly correlated quantum materials is the inaccessibility of the fidelity susceptibility to most state-of-the-art numerical methods. This is particularly apparent away from equilibrium where, at present, no general critical theory is available and many standard techniques fail. Motivated by the usefulness of quantum information-based measures we show that a widely accessible quantity, the single-particle affinity, is able to serve as a versatile instrument to identify phase transitions beyond Landau’s paradigm. We demonstrate that it not only is able to signal previously identified nonequilibrium phase transitions but also has the potential to detect hitherto unknown phases in models of quantum matter far from equilibrium. |
| first_indexed | 2024-04-10T22:46:20Z |
| format | Article |
| id | doaj.art-be6c972717a24579b2a32069162545a2 |
| institution | Directory Open Access Journal |
| issn | 2056-6387 |
| language | English |
| last_indexed | 2024-04-10T22:46:20Z |
| publishDate | 2023-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Quantum Information |
| spelling | doaj.art-be6c972717a24579b2a32069162545a22023-01-15T12:17:40ZengNature Portfolionpj Quantum Information2056-63872023-01-01911810.1038/s41534-022-00671-8Efficient quantum information probes of nonequilibrium quantum criticalityMiguel M. Oliveira0Pedro Ribeiro1Stefan Kirchner2CeFEMA, Instituto Superior Técnico, Universidade de LisboaCeFEMA, Instituto Superior Técnico, Universidade de LisboaDepartment of Electrophysics, National Yang Ming Chiao Tung UniversityAbstract Quantum information-based approaches, in particular the fidelity, have been flexible probes for phase boundaries of quantum matter. A major hurdle to a more widespread application of fidelity and other quantum information measures to strongly correlated quantum materials is the inaccessibility of the fidelity susceptibility to most state-of-the-art numerical methods. This is particularly apparent away from equilibrium where, at present, no general critical theory is available and many standard techniques fail. Motivated by the usefulness of quantum information-based measures we show that a widely accessible quantity, the single-particle affinity, is able to serve as a versatile instrument to identify phase transitions beyond Landau’s paradigm. We demonstrate that it not only is able to signal previously identified nonequilibrium phase transitions but also has the potential to detect hitherto unknown phases in models of quantum matter far from equilibrium.https://doi.org/10.1038/s41534-022-00671-8 |
| spellingShingle | Miguel M. Oliveira Pedro Ribeiro Stefan Kirchner Efficient quantum information probes of nonequilibrium quantum criticality npj Quantum Information |
| title | Efficient quantum information probes of nonequilibrium quantum criticality |
| title_full | Efficient quantum information probes of nonequilibrium quantum criticality |
| title_fullStr | Efficient quantum information probes of nonequilibrium quantum criticality |
| title_full_unstemmed | Efficient quantum information probes of nonequilibrium quantum criticality |
| title_short | Efficient quantum information probes of nonequilibrium quantum criticality |
| title_sort | efficient quantum information probes of nonequilibrium quantum criticality |
| url | https://doi.org/10.1038/s41534-022-00671-8 |
| work_keys_str_mv | AT miguelmoliveira efficientquantuminformationprobesofnonequilibriumquantumcriticality AT pedroribeiro efficientquantuminformationprobesofnonequilibriumquantumcriticality AT stefankirchner efficientquantuminformationprobesofnonequilibriumquantumcriticality |