Can twisted light be used to detect gravity waves?

[johndevers@iprimus.com.au]

I noticed the article posted below and started wondering, could this
new modified half wave plate be used as a gravity wave detector?

Would gravity waves change the phase enough to change the number of
photons being produced with orbital spin?

Is the "variation" mentioned in the article anywhere near LIGOs
10^{-16} centimeters accuracy?

Could one of these devices be built for photons with a very small
wavelength, would it get close to LIGOs accuracy?

Could one of these modified half wave plates for be built for
electrons?



Giving Light a New Twist

http://focus.aps.org/story/v17/st15

"With the right choice of this variation, the device doesn't absorb
spin angular momentum when it reverses a photon's spin but instead
switches it into orbital angular momentum of the outgoing photon."

[Doug Goncz]

johndevers@iprimus.com.au wrote:
> I noticed the article posted below and started wondering, could this
> new modified half wave plate be used as a gravity wave detector?
(snip)
> http://focus.aps.org/story/v17/st15
>
> "With the right choice of this variation, the device doesn't absorb
> spin angular momentum when it reverses a photon's spin but instead
> switches it into orbital angular momentum of the outgoing photon."

>From that page:

"In quantum terms, the beam consists of photons, each one imbued with
the properties of the beam as a whole. "Synchronized clocks"
corresponds to photons with one unit of intrinsic spin, positive or
negative according to the sense of the rotation. In the "clocks
out-of-phase" case, the photons also possess so-called orbital angular
momentum. A single photon can in principle carry any whole-number
amount of this rotation, from minus to plus infinity."

I am fairly sure Uncle Al will have something to say about this. He's
been looking at chiral materials in a gravitaional field for, what, at
least five years now?

Doug Goncz
Replikon Research
Falls Church, VA 22044-0394

[paul.valletta@ntlworld.com]

I think there are a number of possible
applications:http://www.aip.org/pnu/2006/776.html

I recall another idea on similar footings by Ulf Leonhart?

[johndevers@iprimus.com.au]

>I think there are a number of possible
>applications:http://www.aip.org/pnu/2006/776.html

>I recall another idea on similar footings by Ulf Leonhart?

I'm not quite sure what you mean by applications in regard to that
link, can you explain what the connection is between
electromagnetically induced transparency, spin angular momentum and
orbital angular momentum?

However I did read that link recently and I was wondering if
electromagnetically induced transparency could be the mechanism for
Maser emissions in molecular clouds? (As inspired in the link below)

And can anyone here tell me if the dark state polariton is important to
this process?

Available here at present.

http://www2b.abc.net.au/science/k2/stn/newposts/2251/topic2251698.shtm

When archived in a few months try here. (at a guess)

http://www2b.abc.net.au/science/k2/stn/archives/archive113/newposts/2251/topic2251698.shtm

[paul.valletta@ntlworld.com]

Here:
http://uk.arxiv.org/abs/cond-mat?papernum=0510071

is a good paper with links therin?