[net.physics] new directions in physics/cs

gjerawlins@watdaisy.UUCP (Greg Rawlins) (11/21/84)

["I don't want millions,I want answers to my questions."]

	I have a question for the net: in Gribbin's
"Schrodinger's Cat" book(*) he claims that Terry Clark at the
University of Sussex has created a "quantumatom" in a ring
of superconducting material roughly 1/2 cm across. This
object is supposed to mimic the behaviour of true quantum
particles in that a change in state is *instantaneous* over
the entire ring. The obvious use for this is as the next
generation after Josephson junction computers, since
(theoretically) there will be *zero* time spent in between
one state and the next. A good example bringing this home to
the non-architecture people out there is the possibility of
putting information on a bus (say) and having zero time
elapse before this information causes some action!
	Does anyone know whether this is an ongoing project?
Also, if it is what does it mean for us in computer
science/physics? For example what kind of protocols would be
necessary (/sufficient) to make use of such a machine?

-----
(*) yet-another-book-on-quantum-mech-for-laypersons.
-- 
/-----------------------------------------------------\
|Mail :Greg Rawlins :Department of Computer Science   |
|      allegra\      U.of Waterloo,Waterloo,Ont.N2L3G1|
|      clyde \  \                                     |
|UUCP :decvax ---- watmath --- watdaisy --- gjerawlins|
|      ihnp4 /  /                                     |
|      linus  /                                       |
|CSNET:gjerawlins%watdaisy%watmath@waterloo.csnet     |
\-----------------------------------------------------/

chris@politik.UUCP (Christopher Seiwald) (11/25/84)

>
>	"Schrodinger's Cat" book(*) he claims that Terry Clark at the
>	University of Sussex has created a "quantumatom" in a ring
>	of superconducting material roughly 1/2 cm across. This
>	object is supposed to mimic the behaviour of true quantum
>	particles in that a change in state is *instantaneous* over
>	the entire ring. 
>
> 		gjerawlins@watdaisy.UUCP (Greg Rawlins)

Sounds like an FTL farce to me.  Am I wrong, or can information (e.g.
the change in state) travel no faster than light, since the information
carrier (e.g. electrons, photons) itself is so bound?
-- 
Christopher Seiwald
dual!ptsfa!politik!chris