| Texto completo | |
| Autor(es): |
Tzuang, Lawrence D.
[1]
;
Fang, Kejie
[2, 3]
;
Nussenzveig, Paulo
[4, 1]
;
Fan, Shanhui
[2]
;
Lipson, Michal
[1, 5]
Número total de Autores: 5
|
| Afiliação do(s) autor(es): | [1] Cornell Univ, Sch Elect & Comp Engn, Ithaca, NY 14853 - USA
[2] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 - USA
[3] CALTECH, Thomas J Watson Sr Lab Appl Phys, Pasadena, CA 91125 - USA
[4] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo - Brazil
[5] Cornell Univ, Kavli Inst Cornell Nanoscale Sci, Ithaca, NY 14853 - USA
Número total de Afiliações: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Nature Photonics; v. 8, n. 9, p. 701-705, SEP 2014. |
| Citações Web of Science: | 149 |
| Resumo | |
Photons are neutral particles that do not interact directly with a magnetic field. However, recent theoretical work(1,2) has shown that an effective magnetic field for photons can exist if the phase of light changes with its direction of propagation. This direction-dependent phase indicates the presence of an effective magnetic field, as shown experimentally for electrons in the Aharonov-Bohm experiment. Here, we replicate this experiment using photons. To create this effective magnetic field we construct an on-chip silicon-based Ramsey-type interferometer(3-7). This interferometer has been traditionally used to probe the phase of atomic states and here we apply it to probe the phase of photonic states. We experimentally observe an effective magnetic flux between 0 and 2 pi corresponding to a non-reciprocal 2 pi phase shift with an interferometer length of 8.35 mm and an interference-fringe extinction ratio of 2.4 dB. This non-reciprocal phase is comparable to those of common monolithically integrated magneto-optical materials. (AU) | |
| Processo FAPESP: | 11/12140-6 - Ótica quântica e informação quântica em chips de silício |
| Beneficiário: | Paulo Alberto Nussenzveig |
| Modalidade de apoio: | Bolsas no Exterior - Pesquisa |