Timeline for Double Slit Experiment: How do scientists ensure that there's only one photon?
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| S Jan 14, 2018 at 10:46 | history | suggested | CommunityBot | CC BY-SA 3.0 |
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| Jan 14, 2018 at 10:23 | review | Suggested edits | |||
| S Jan 14, 2018 at 10:46 | |||||
| Oct 21, 2013 at 6:37 | comment | added | John Cuna | Indeed this has been our method of choice. We've been working particularly with CdS QDs. The great advantage is the ability to grow the QDs to any arbitrary size and therefore tune the photon frequency as desired. | |
| Oct 3, 2013 at 15:12 | history | edited | gregsan | CC BY-SA 3.0 |
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| Sep 11, 2013 at 9:24 | comment | added | FraSchelle | @gregsan To comment further about the above cited Aspect/Grangier/Roger experiment alongside the question Felicitus asked: they are sure they have only one photon because they have two detectors (avalanche photo-diode) which never clic at the same time. Say differently, when they clic together at the same time, you can discard the counting controllably. Thanks you for this interesting answer. | |
| Sep 11, 2013 at 9:11 | comment | added | FraSchelle | @user1800 The double slit experiment with single photons was first performed in ... 1986, in a pioneer experiment by Aspect, Grangier and Roger, please see dx.doi.org/10.1209/0295-5075/1/4/004 especially Fig.4, which shows the appearance of the fringe for large number of photon counts. The gregsan answer is a modern version of the photon cascade effect that Aspect and Grangier used in the 80's for photons on demand. Studying quantum dots semi-conductor is still an active field of research for unique-photons-on-demand, too. | |
| Sep 4, 2013 at 6:46 | comment | added | MarcelineH | The double slit experiment was performed over a century ago, there were was no nanotechnology back then. So how do you think people made sure that just one single photon was involved in the experiment, other than deducing the existence of light as quanta by the observation of experiments? | |
| Sep 4, 2013 at 1:31 | comment | added | dmckee --- ex-moderator kitten | I'm sure this will work, but I doubt that anyone bothers. | |
| Sep 4, 2013 at 0:21 | history | answered | gregsan | CC BY-SA 3.0 |