Lijun Wang
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Lijun Wang is a physicist born in Peijing (China) in 1966
Lijun Wang received her[1] Ph.D. from the University of Rochester in 1992. She was a associate of research at Duke University from 1992 to 1994, and 1994 to 1996 was a senior scientist at the institute of research for General Atomics Corp. 1996 to 2004, she was a research scientist and later an honorary member of the technical staff at the institute of research at NEC in Princeton, NJ. She is now a director of research Max-Planck Institute for the optical systems of transmission of Photonique information, and a professor of experimental physics at the university of Erlangen-Nuremberg, in Erlangen, Allemagne. Dr. Wang is also an honorary member of the Max-Planck Society for the Advancement of Science. She was an honorary collaborator with JILA (1997-98) and writer in letters of optical system (1999-2003). Dr. Wang is a member of the optical company of America.
[edit] " beyond" speed of the light : the experiment of July 20, 2000
At the laboratory of the NEC with Princeton on July 20, 2000 her team sent a wave through 1 cm of cesium gas in order to obtain a speed of group. It results a rebuilding from it from the wave package at exit 62 nanoseconds before the entry of the package in the bulb. The package thus left the bulb before entering. This retroactive effect, which is similar to the seemingly superluminal propagation of material particles in the tunneling effect, is a consequence of the infinite space extension of a light wave. Still,it does not contradict the theory of relativity which asserts that no signal can be propagated at a speed higher than that of the light. Indeed, Lijun Wang considers that she did not thwart relativity in the experiment, even if there was a superluminal phenomenon. She carried out this experiment to prove that "Nothing can move more quickly than the light" is erroneous.
The technique used in the experiment cannot be used to transmit information at superluminal velocity. It is conceptually similar to the light from a lighthouse sweeping across the stars at what would be an impossible speed were it an object moving from star to star rather than the end of a light beam.
Wang continues her work as Professor at the university of Nuremberg where she does research in the field of optics and photonic transmission.
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