Signatures of fractional statistics in nonlinear pump-probe spectroscopy
We show that the presence of anyons in the excitation spectrum of a two-dimensional system can be inferred from nonlinear spectroscopic quantities. In particular, we consider pump-probe spectroscopy, where a sample is irradiated by two light pulses with an adjustable time delay between them. The rel...
| Main Authors: | , , |
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| Format: | Journal article |
| Language: | English |
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American Physical Society
2024
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| _version_ | 1826312227606495232 |
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| author | McGinley, M Fava, M Parameswaran, SA |
| author_facet | McGinley, M Fava, M Parameswaran, SA |
| author_sort | McGinley, M |
| collection | OXFORD |
| description | We show that the presence of anyons in the excitation spectrum of a two-dimensional system can be inferred from nonlinear spectroscopic quantities. In particular, we consider pump-probe spectroscopy, where a sample is irradiated by two light pulses with an adjustable time delay between them. The relevant response coefficient exhibits a universal form that originates from the statistical phase acquired when anyons created by the first pulse braid around those created by the second. This behavior is shown to be qualitatively unchanged by nonuniversal physics including nonstatistical interactions and small nonzero temperatures. In magnetic systems, the signal of interest can be measured using currently available terahertz-domain probes, highlighting the potential usefulness of nonlinear spectroscopic techniques in the search for quantum spin liquids. |
| first_indexed | 2024-03-07T08:25:54Z |
| format | Journal article |
| id | oxford-uuid:42ca93e6-cebd-446b-b6d8-4f7db0c237ea |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T08:25:54Z |
| publishDate | 2024 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:42ca93e6-cebd-446b-b6d8-4f7db0c237ea2024-02-19T11:36:30ZSignatures of fractional statistics in nonlinear pump-probe spectroscopyJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:42ca93e6-cebd-446b-b6d8-4f7db0c237eaEnglishSymplectic ElementsAmerican Physical Society2024McGinley, MFava, MParameswaran, SAWe show that the presence of anyons in the excitation spectrum of a two-dimensional system can be inferred from nonlinear spectroscopic quantities. In particular, we consider pump-probe spectroscopy, where a sample is irradiated by two light pulses with an adjustable time delay between them. The relevant response coefficient exhibits a universal form that originates from the statistical phase acquired when anyons created by the first pulse braid around those created by the second. This behavior is shown to be qualitatively unchanged by nonuniversal physics including nonstatistical interactions and small nonzero temperatures. In magnetic systems, the signal of interest can be measured using currently available terahertz-domain probes, highlighting the potential usefulness of nonlinear spectroscopic techniques in the search for quantum spin liquids. |
| spellingShingle | McGinley, M Fava, M Parameswaran, SA Signatures of fractional statistics in nonlinear pump-probe spectroscopy |
| title | Signatures of fractional statistics in nonlinear pump-probe spectroscopy |
| title_full | Signatures of fractional statistics in nonlinear pump-probe spectroscopy |
| title_fullStr | Signatures of fractional statistics in nonlinear pump-probe spectroscopy |
| title_full_unstemmed | Signatures of fractional statistics in nonlinear pump-probe spectroscopy |
| title_short | Signatures of fractional statistics in nonlinear pump-probe spectroscopy |
| title_sort | signatures of fractional statistics in nonlinear pump probe spectroscopy |
| work_keys_str_mv | AT mcginleym signaturesoffractionalstatisticsinnonlinearpumpprobespectroscopy AT favam signaturesoffractionalstatisticsinnonlinearpumpprobespectroscopy AT parameswaransa signaturesoffractionalstatisticsinnonlinearpumpprobespectroscopy |