{"id":"https://openalex.org/keywords/spectral-diffusion","display_name":"spectral diffusion","description":"Spectral diffusion is the time-dependent fluctuation of an emitter\u2019s transition frequency, observed as changes in its spectral line in quantum optics and spectroscopy.","display_name_alternatives":["spectral wandering","frequency wandering"],"ids":{"openalex":"https://openalex.org/keywords/spectral-diffusion","wikidata":null},"primary_topic":{"id":"https://openalex.org/T11177","display_name":"Spectroscopy and Quantum Chemical Studies","score":0.2889,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11177","display_name":"Spectroscopy and Quantum Chemical Studies","score":0.2889,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10022","display_name":"Semiconductor Quantum Structures and Devices","score":0.0824,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"works_count":2176,"cited_by_count":61929,"works_api_url":"https://api.openalex.org/works?filter=keywords.id:keywords/spectral-diffusion","updated_date":"2026-10-24T04:06:44","created_date":"2026-09-30T00:00:00"}