http://www.kurzweilai.net/the-quantum-internet Accelerating Intelligence Wed, 22 May 2013 16:51:31 +0000 hourly 1 http://wordpress.org/?v=3.4.1 http://www.kurzweilai.net/the-quantum-internet/comment-page-1#comment-97630 Salah Sat, 09 Feb 2013 23:56:51 +0000 http://www.kurzweilai.net/?p=179364#comment-97630 The speed of light in a medium is v = C / n Where c is the speed of light in vacuum and n is the refractive index of such medium. N is always large than 1.00 That is the simplest answer, ignoring many details of dispersion, group velocity, scattering at interfaces, ext.... The speed of light in a medium is v = C / n
Where c is the speed of light in vacuum and n is the refractive index of such medium. N is always large than 1.00
That is the simplest answer, ignoring many details of dispersion, group velocity, scattering at interfaces, ext….

]]> http://www.kurzweilai.net/the-quantum-internet/comment-page-1#comment-97280 Justin Fri, 08 Feb 2013 21:06:08 +0000 http://www.kurzweilai.net/?p=179364#comment-97280 Wow Tom, you have such an awesome blog Wow Tom, you have such an awesome blog

]]> http://www.kurzweilai.net/the-quantum-internet/comment-page-1#comment-97018 George Fri, 08 Feb 2013 09:18:22 +0000 http://www.kurzweilai.net/?p=179364#comment-97018 How much quantum information can be embedded into one photon? How much quantum information can be embedded into one photon?

]]> http://www.kurzweilai.net/the-quantum-internet/comment-page-1#comment-96852 Tom Thu, 07 Feb 2013 21:14:18 +0000 http://www.kurzweilai.net/?p=179364#comment-96852 The speed of light is medium dependent. http://en.wikipedia.org/wiki/Refractive_index The speed of light is medium dependent.
http://en.wikipedia.org/wiki/Refractive_index

]]> http://www.kurzweilai.net/the-quantum-internet/comment-page-1#comment-96817 Daniel Aminoff Thu, 07 Feb 2013 19:14:58 +0000 http://www.kurzweilai.net/?p=179364#comment-96817 Do individual photons travel down an optical fiber at the "speed of light in a vacuum" or do they do so at some (significantly) reduced rate due to the nature of the material? For e.g., the reason that electricity seems to travel down a wire at the speed of light is that the entering electron bumps the intervening electrons and a different electron falls out at the other end... the indicvidual electron does not travel down the wire at the speed of light. Since here we are interested in the state of the entering photon, presumably this same photon needs to exit at the other end of the fiber to carry the information? If so, perhaps this is only intended tp be useful for relatively short distances? Do individual photons travel down an optical fiber at the “speed of light in a vacuum” or do they do so at some (significantly) reduced rate due to the nature of the material? For e.g., the reason that electricity seems to travel down a wire at the speed of light is that the entering electron bumps the intervening electrons and a different electron falls out at the other end… the indicvidual electron does not travel down the wire at the speed of light. Since here we are interested in the state of the entering photon, presumably this same photon needs to exit at the other end of the fiber to carry the information? If so, perhaps this is only intended tp be useful for relatively short distances?

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