I Electron counterpart of pseudothermal light source for quantum experiments

  • Thread starter Thread starter Swamp Thing
  • Start date Start date
  • Tags Tags
    Electron Light
Click For Summary
A pseudothermal light source described by Kuusela offers a simple method for conducting quantum correlation experiments in college labs, serving as an alternative to traditional laser setups. This source utilizes a bandlimited noise to modulate the intensity of light from an LED, allowing for the examination of temporal photon statistics. The discussion raises the question of whether similar modulation techniques could be applied to electrons or other particles to explore second-order quantum correlations. Additionally, it suggests the potential for using a TV or oscilloscope tube to record light intensity and indirectly investigate electron antibunching through temporal correlations. The possibility of studying spatial antibunching by applying different noise modulations to each beam in a color TV tube is also considered.
Swamp Thing
Insights Author
Messages
1,035
Reaction score
774
Kuusela https://research.utu.fi/converis/portal/detail/Publication/32053938?lang=en_GB (published in AJP) (PDF here) describes a pseudothermal light source that can be built easily in college labs, and can be used to do some quantum correlation experiments. They propose this as an alternative to the popular design based on a laser bouncing off a rotating ground glass surface, as originally described by Martiensen.

They use a bandlimited noise source to modulate the intensity of light from an ordinary LED. This gives the opportunity to study temporal photon statistics, but not spatial.

Is it possible in principle to do this (not necessarily in a college setting) with electrons or other particles, by modulating the beam (similar to modulating spot intensity in an old-style TV tube)? Would this allow the nature of second-order quantum correlations to be studied?

Edit #2: If we use an actual TV or oscilloscope tube, can we record the light intensity of the spot on the screen and use it to indirectly study electron antibunching via temporal correlation?

Edit #3: If we use a color TV tube and apply different noise modulations to each beam, can we study spatial antibunching?

Edit: The PDF link will open the web page and download the PDF in the background.
 
Last edited:
For the quantum state ##|l,m\rangle= |2,0\rangle## the z-component of angular momentum is zero and ##|L^2|=6 \hbar^2##. According to uncertainty it is impossible to determine the values of ##L_x, L_y, L_z## simultaneously. However, we know that ##L_x## and ## L_y##, like ##L_z##, get the values ##(-2,-1,0,1,2) \hbar##. In other words, for the state ##|2,0\rangle## we have ##\vec{L}=(L_x, L_y,0)## with ##L_x## and ## L_y## one of the values ##(-2,-1,0,1,2) \hbar##. But none of these...

Similar threads

  • · Replies 16 ·
Replies
16
Views
3K
  • · Replies 36 ·
2
Replies
36
Views
5K
  • · Replies 36 ·
2
Replies
36
Views
7K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 1 ·
Replies
1
Views
1K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 3 ·
Replies
3
Views
1K
  • · Replies 14 ·
Replies
14
Views
4K
  • · Replies 19 ·
Replies
19
Views
2K
  • · Replies 10 ·
Replies
10
Views
2K