I said a line of emitted photon's.
and yes photons means more than one photon and if they
are being emitted in a line then a line of emitted photons
really is such a thing.
Yes but just checking to make sure you get the full picture.
You know the photon emission process so the chances of getting two photons in a perfect line behind each other is going to be extremely rare even when we use a reflector, lense or wave guide process they will generally always be slightly offset and hence all light beams have a width even a laser beam has a defined width because of this problem.
It is one of those active areas of research I mean we can make a continual emission of Radio frequency because the generation is easy but that is not true of light although in theory it should be possible it is still an EM wave.
The most likely way to break the problem is by using Purcell effect (
http://en.wikipedia.org/wiki/Purcell_effect) but there is also some hope with laser in micro wave cavities and maybe someone will discover a new way to do it. I think at the moment some of the CW lasers are closest to what is really desired.
Ideally as scientists what we would like is a something like quantum dot that emits a guaranteed single photon and then be able to bring the photon emission in closer and closer in time so the photon waves are literally one behind each other or a CW laser beam one photon wide (single wave with perfect temporal coherence) so it looks like that Radio EM wave above but that is a long way off currently.
