منابع مشابه
Slow light
‘‘New Problems’’ resumes this month with the first of a series of problems from Kirk McDonald of Princeton University. ‘‘New Problems’’ continues to solicit interesting and novel worked problems for use in undergraduate physics courses beyond the introductory level. We seek problems that convey the excitement and interest of current developments in physics and that are useful for teaching cours...
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The coherent excitation of excitonic and continuum Wannier-Stark states in a semiconductor superlattice with femtosecond laser pulses leads to a modulation of both the interband and the intraband polarization. The field dependence of the Bloch oscillation frequency of the nonlinear interband polarization is shown to differ strongly from that of the intraband polarization. We find that the obser...
متن کاملSlow light beam splitter.
We demonstrate a slow light beam splitter using rapid coherence transport in a wall-coated atomic vapor cell. We show that particles undergoing random and undirected classical motion can mediate coherent interactions between two or more optical modes. Coherence, written into atoms via electromagnetically induced transparency using an input optical signal at one transverse position, spreads out ...
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ژورنال
عنوان ژورنال: Nature Photonics
سال: 2018
ISSN: 1749-4885,1749-4893
DOI: 10.1038/s41566-018-0128-1