Reprinted by permission from Macmillan Publishers Ltd: [
NATURE]
(Stenner, M.D., Gauthier, D.J. & Neifeld, M.A.
Nature 425, 695-698 (2003))
copyright (2003)
'The speed of information in a fast-light optical medium'
www.nature.com
For clearness' sake; i didn't write this, i first read it at Nature and afterwards tapped it in here.
This i posted after reading an article on Nature called 'Faster than a speeding photon' by Jon Marrangos.
Because it's not literally, i better post the literally and then note everything.
'In this experiment, each of the different frequency components making up the pulse experiences a slightly different dispersion in the medium. The relative phases between them are therefore changed and the pulse shape is shifted to bring the pulse wave packet (or group velocity) forward in time. So the anomalous dispersion leads to interference between different frequency components of the pulse that produce the superluminal effect. Although amazing, this type of superluminal pulse propagation does not violate the principle of causality.'
Reprinted by permission from Macmillan Publishers Ltd: [
NATURE]
(Jon Marangos, Nature
406, 243-244 (20 Juli 2000))
Copyright 2000
'News and Views', 'Faster than a speeding photon'
www.nature.com
For clearness' sake; i didn't know anything at all about this; i only did once i read the article.
'Wang
at al. argue that their superluminal pulses are the result of the wave nature of light itself (fortunately, making it impossible for an object with mass to travel faster than
c) and that no actual information, or signal, is transmitted faster than
c.'
Reprinted by permission from Macmillan Publishers Ltd: [
NATURE]
(Jon Marangos,
Nature 406, 243-244 (20 Juli 2000))
Copyright (2000)
'News and Views', 'Faster than a speeding photon'
www.nature.com
(Wang, L. J. , Kuzmich, A. & Dogariu, A.
Nature 406, 277-279 (2000))
Copyright (2000)
'Gain assisted superluminal light propagation'.
www.nature.com
For clearness' sake, i only knew about this when i read the articles.
'We measure a negative group-velocity index.'
Reprinted by permission from Macmillan Publishers Ltd: [
NATURE]
(Wang, L. J. , Kuzmich A. & Dogariu, A.
Nature 406, 277-279 (20 Juli 2000))
Copyright (2000)
'Gain assisted superluminal light propagation'
www.nature.com
For clearness' sake, i only knew about this when i read the article.
Quote:
|
Originally Posted by David Maes Using these techniques light can even be 'frozen'.
This does not occur in vacuum. |
'Frozen light is a reality.'
Reprinted by permission from Macmillan Publishers Ltd: [
NATURE]
(Marlan O. Scully,
Nature 426, 610-611 (11 december 2003))
Copyright (2003)
'Quantum optics: Light at a standstill'
www.nature.com
(Bajcsy, M., Zibrov, A. S. & Lukin, M. D.
Nature 426, 638-641 (11 december 2003)
Copyright (2003)
'Stationary pulses of light in an atomic medium'
www.nature.com
For clearness' sake, i only knew about it when i read the article.
Sorry it's so late i make it clear; but i had to figger out where i read it again.
Of course Toequest already told me about standstill of light; but i also read it on Nature.
Just had to make clear i didn't write this.
i think it's much more sensible if you also quote (and ask permission first) something before sending it.
As i saw Tesla doing that immediately, i noticed she was more sensible than i; next to the contents of the posts, so i just
couldn't let something happen with her/him.
i know, as a member (with pleasure) i have an advantage (hope you don't mind me saying that).
But sense attracts me.