Success_Machine
Apr7-04, 09:13 AM
<jabberwocky><div class="vbmenu_control"><a href="jabberwocky:;" onClick="newWindow=window.open('','usenetCode','toolbar=no, location=no,scrollbars=yes,resize=yes,status=no,wi dth=650,height=400'); newWindow.document.write('<HTML><HEAD><TITLE>Usenet ASCII</TITLE></HEAD><BODY topmargin=0 leftmargin=0 BGCOLOR=#F1F1F1><table border=0 width=625><td bgcolor=midnightblue><font color=#F1F1F1>This Usenet message\'s original ASCII form: </font></td></tr><tr><td width=449><br><br><font face=courier><UL><PRE>I recently learned that the state of an entangled particle can be\nmeasured without changing or destroying it, i.e. without using a\ndetector that converts the particle to electrical signals as a means\nof detection. I have a few questions:\n\n1. Does this mean that Shannon\'s Law no longer applies, since a single\nphoton can be used multiple times to communicate a bit of information?\nWhat is the new law governing maximum bitrate per channel ?\n\n2. Since quantum states can be communicated without a line-of-sight,\ndoes this mean that we can dispense with giant high-accuracy targeting\nmirrors for laser communication? Wouldn\'t the information simply find\nit\'s way to the detector in some spooky fashion, without need to point\nan antenna in its direction?\n\n3. Does communication by quantum non-demolition teleportation imply\nthat energy is being transmitted? For example, could I generate\nelectricity in a lab, use it to alternate the states of entangled\nparticles, and thereby supply power to a similarly connected device at\na great distance without a line-of-sight? For example, could I supply\npower to a spacecraft from a ground station without any conventional\ntransmitter?\n\n</UL></PRE></font></td></tr></table></BODY><HTML>');"> <IMG SRC=/images/buttons/ip.gif BORDER=0 ALIGN=CENTER ALT="View this Usenet post in original ASCII form"> View this Usenet post in original ASCII form </a></div><P></jabberwocky>I recently learned that the state of an entangled particle can be
measured without changing or destroying it, i.e. without using a
detector that converts the particle to electrical signals as a means
of detection. I have a few questions:
1. Does this mean that Shannon's Law no longer applies, since a single
photon can be used multiple times to communicate a bit of information?
What is the new law governing maximum bitrate per channel ?
2. Since quantum states can be communicated without a line-of-sight,
does this mean that we can dispense with giant high-accuracy targeting
mirrors for laser communication? Wouldn't the information simply find
it's way to the detector in some spooky fashion, without need to point
an antenna in its direction?
3. Does communication by quantum non-demolition teleportation imply
that energy is being transmitted? For example, could I generate
electricity in a lab, use it to alternate the states of entangled
particles, and thereby supply power to a similarly connected device at
a great distance without a line-of-sight? For example, could I supply
power to a spacecraft from a ground station without any conventional
transmitter?
measured without changing or destroying it, i.e. without using a
detector that converts the particle to electrical signals as a means
of detection. I have a few questions:
1. Does this mean that Shannon's Law no longer applies, since a single
photon can be used multiple times to communicate a bit of information?
What is the new law governing maximum bitrate per channel ?
2. Since quantum states can be communicated without a line-of-sight,
does this mean that we can dispense with giant high-accuracy targeting
mirrors for laser communication? Wouldn't the information simply find
it's way to the detector in some spooky fashion, without need to point
an antenna in its direction?
3. Does communication by quantum non-demolition teleportation imply
that energy is being transmitted? For example, could I generate
electricity in a lab, use it to alternate the states of entangled
particles, and thereby supply power to a similarly connected device at
a great distance without a line-of-sight? For example, could I supply
power to a spacecraft from a ground station without any conventional
transmitter?