Quantum entanglement of microwave photons Text

Jim Lewis

Jul19-04, 04:09 AM

<jabberwocky><div class="vbmenu_control"><a href="jabberwocky:;" onClick="newWindow=window.open('','usenetCode','toolbar=no,location=no,scrollbars=yes,resizable=yes,status=no,width=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>\n\n\n\nAre there any published reports of entanglement of photons in the\nmicrowave wavelengths, say 10 cm (3 GHz frequency), or research toward\nsame?\n\nThere seems to be a lot of progress in entanglement of beams of\nphotons in or near the wavelengths of visible light, but I have not\nfound any reports of microwave-microwave photon entanglement.\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>Are there any published reports of entanglement of photons in the
microwave wavelengths, say 10 cm (3 GHz frequency), or research toward
same?

There seems to be a lot of progress in entanglement of beams of
photons in or near the wavelengths of visible light, but I have not
found any reports of microwave-microwave photon entanglement.

Pieter Kuiper

Jul20-04, 04:25 AM

<jabberwocky><div class="vbmenu_control"><a href="jabberwocky:;" onClick="newWindow=window.open('','usenetCode','toolbar=no,location=no,scrollbars=yes,resizable=yes,status=no,width=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>\njim_lewis_11@hotmail.com (Jim Lewis) wrote:\n\n> Are there any published reports of entanglement of photons in the\n> microwave wavelengths, say 10 cm (3 GHz frequency), or research toward\n> same?\n\nIt is very difficult to do photon counting experiments on such photons\nbecause their energy is so low. The detector would need to be cooled to\ntemperatures where the kT is clearly less than hw.\n\n--\n"Electrons damage the brain," said Farish. (Donna Tartt)\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>jim_lewis_11@hotmail.com (Jim Lewis) wrote:

> Are there any published reports of entanglement of photons in the
> microwave wavelengths, say 10 cm (3 GHz frequency), or research toward
> same?

It is very difficult to do photon counting experiments on such photons
because their energy is so low. The detector would need to be cooled to
temperatures where the kT is clearly less than hw.

--
"Electrons damage the brain," said Farish. (Donna Tartt)