Re: Single photon emission - absorbtion time delay experiments ?

Igor Khavkine wrote:
Boo wrote:
Hi,

On a matter related to several other current threads here, can anyone tell me
whether there are experiments that show that the time delay between the emission
and the (more or less remote) absorbtion of that exact same photon are
compatible with its speed being c ?

An underlying assumption under this question seems that you consider
photons as point particles whose location, as well as times of
absorption and emission, can be measured with any desired precision.

I'm not really assuming that. I understand that there are processes which generate photons in pairs with opposite attributes like momentum etc. By detecting one of these locally it ought to be possible to determine the time of emission with a reasonable accuracy cf the time of flight. I also understand that it is possible to detect single photons with eg ccd detectors, and it ought also to be possible to reduce the uncertainty in detection time to be small cf a long enough time of flight. I just wondered if there have been any experiments along these lines that actually attempt to time transit times for individual emmission / absorption events of photons ?

--
Boo

.

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