Tagged Questions
1
vote
2answers
86 views
Does performing a measurement on a system change its internal energy?
I'm studying Quantum Mechanics in my spare time from a general point of view (no technical details) so some fundamental question came into my mind:
How is it possible to detect a single photon ...
1
vote
0answers
31 views
How does a photon leave trace of its polarization state in a photon detector but not trace of which direction it came in?
Some quantum erasure experiments involve polarization of photons. In one such experiment with a double slit, a horizontal polarizer is used in front of one slit, and a vertical polarizer is used for ...
3
votes
1answer
155 views
Single photon interference experiment
In short: the question is, does the length of the path affect the outcome of detecting a photon?
Consider the single photon beam splitter experiment. Does the probability of detecting the photon ...
4
votes
4answers
276 views
Why does a photon colliding with an atomic nucleus cause pair production?
I understand that the photon needs to have enough energy to produce a lepton and it's antimatter partner, and that all of the properties are conserved, but why does the photon do this in the first ...
14
votes
3answers
724 views
Amplitude of an electromagnetic wave containing a single photon
Given a light pulse in vacuum containing a single photon with an energy $E=h\nu$, what is the peak value of the electric / magnetic field?
2
votes
3answers
475 views
Can a photon be emitted with a wavelength > 299,792,458 meters, and would this violate c?
Just curious if the possibility exists (not necessarily spontaneously) for a photon with a wavelength greater than the distance component of c to be emitted, and would this inherently violate the ...
