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http://hdl.handle.net/1843/42431| Tipo: | Artigo de Periódico |
| Título: | Photonic counterparts of Cooper pairs |
| Autor(es): | André Luiz Saraiva de Oliveira Filomeno Soares de Aguiar Júnior Reinaldo Faria de Melo e Souza Arthur Patrocínio Pena Carlos Henrique Monken Marcelo Paleologo Elefteriadis de França Santos Belita Koiller Ado Jorio de Vasconcelos |
| Resumen: | The microscopic theory of superconductivity raised the disruptive idea that electrons couple through the elusive exchange of virtual phonons, overcoming the strong Coulomb repulsion to form Cooper pairs. Light is also known to interact with atomic vibrations, as, for example, in the Raman effect. We show that photon pairs exchange virtual vibrations in transparent media, leading to an effective photon-photon interaction identical to that for electrons in the BCS theory of superconductivity, in spite of the fact that photons are bosons. In this scenario, photons may exchange energy without matching a quantum of vibration of the medium. As a result, pair correlations for photons scattered away from the Raman resonances are expected to be enhanced. An experimental demonstration of this effect is provided here by time-correlated Raman measurements in different media. The experimental data confirm our theoretical interpretation of a photonic Cooper pairing, without the need for any fitting parameters. |
| Asunto: | Fótons Espectroscopia de Raman |
| Idioma: | eng |
| País: | Brasil |
| Editor: | Universidade Federal de Minas Gerais |
| Sigla da Institución: | UFMG |
| Departamento: | ICX - DEPARTAMENTO DE FÍSICA |
| Tipo de acceso: | Acesso Restrito |
| Identificador DOI: | https://doi.org/10.1103/PhysRevLett.119.193603 |
| URI: | http://hdl.handle.net/1843/42431 |
| Fecha del documento: | 9-nov-2017 |
| metadata.dc.url.externa: | https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.119.193603 |
| metadata.dc.relation.ispartof: | Physical Review Letters |
| Aparece en las colecciones: | Artigo de Periódico |
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