In this paper, we report a gainassisted superluminal light propagation in a. Comment on gainassisted superluminal light propagation. Landauquantized graphene and show that the slope of dispersion. The group velocity of a laser pulse in this region exceeds c and can even. Ringermacher general electric research center, schenectady, ny 12301 lawrence r. Abstract superluminal propagation of light is a wellestablished phenomenon and has motivated immense research interest that has led to stateoftheart knowledge and potential applications in the emerging technology of quantum optics and photonics. Absorptionfree superluminal light propagation in a landau. Here we use gainassisted linear anomalous dispersion to demon strate superluminal light propagation in atomic caesium gas. For generations, physicists believed there is nothing faster than light moving through a vacuum a speed of 186,000 miles per second.
Comment on gainassisted superluminal light propagation arxiv. Wang et al have also observed the gainassisted superluminal light propagation in an atomic threelevel cesium cs vapor cell via the coherent pumping fields 9. In this paper, we report a gainassisted superluminal light propagation in a landauquantized graphene and show that the slope of dispersion. Pdf gainassisted superluminal light propagation researchgate. Comment on gainassisted superluminal light propagation harry i. In fact the superluminal propagation is only inferred from the existence of a minimum of transmission of the system at the.
Pdf comment on gainassisted superluminal light propagation. Then, the gainassisted superluminal light propagation due to the crosskerr nonlinearity is established in cavity optomechanical system with a. Gainassisted superluminal light propagation through. Scientists have apparently broken the universes speed limit. It has been drawn to our attention that we inadvertently did not cite a previous paper by segard and macke1 on. Gainassisted superluminal light propagation nature. Gainassisted superluminal light propagation find, read and cite all the research you need on researchgate. We use gainassisted linear anomalous dispersion to demonstrate superluminal light pulse propagation with a negative group velocity through a transparent atomic medium. Pdf wang, kuzmich and dogariu, in their 20 july, 2000, nature article, describe an experiment ostensibly measuring superluminal speeds of. Gainassisted superluminal propagation and rotary drag of photon. Here we use gainassisted linear anomalous dispersion to demonstrate superluminal light propagation in atomic caesium gas. General electric research center, schenectady, ny 12301. We have investigated the dispersion and the absorption properties of a weak probe field in a fourlevel atomic system by using incoherent pumping fields.
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