Quick Electromagnetically Induced Transparency Question

  • Context: Undergrad 
  • Thread starter Thread starter jaketodd
  • Start date Start date
  • Tags Tags
    Induced
Click For Summary

Discussion Overview

The discussion revolves around the requirements for Electromagnetically Induced Transparency (EIT), specifically whether a magnetic field is necessary or if two electromagnetic beams with certain attributes suffice. The conversation touches on concepts related to atomic states and Zeeman splitting.

Discussion Character

  • Debate/contested

Main Points Raised

  • Jake questions whether a magnetic field is necessary for EIT or if it can be achieved with just two electromagnetic beams.
  • One participant suggests that Zeeman splitting is required and mentions that the Earth's magnetic field is sufficient for this purpose, noting that EIT can be used to measure its strength.
  • A later reply challenges the need for Zeeman splitting by stating that atoms can have three states without any splitting.
  • Another participant acknowledges that using completely different states may not require Zeeman splitting but expresses uncertainty about the sensitivity of the EIT effect for degenerate states in the absence of Zeeman splitting.

Areas of Agreement / Disagreement

Participants express differing views on the necessity of Zeeman splitting for EIT, indicating that multiple competing perspectives remain unresolved.

Contextual Notes

The discussion includes assumptions about atomic states and the conditions under which EIT can occur, but these assumptions are not fully explored or agreed upon.

jaketodd
Gold Member
Messages
507
Reaction score
21
Do you need a magnetic field for EIT, or just two electromagnetic beams with the right attributes?

Thanks,

Jake
 
Physics news on Phys.org
If I remember correctly, you need some Zeeman splitting. The magnetic field of Earth is sufficient, and you can use EIT to measure its field strength.
 
mfb said:
If I remember correctly, you need some Zeeman splitting. The magnetic field of Earth is sufficient, and you can use EIT to measure its field strength.

Why would you need Zeeman splitting, if an atom already has three states without splitting any of them?
 
If you use completely different states that is not an issue, you are right. I am not sure how sensitive the EIT effect is for different (degenerate) states if you have no Zeeman splitting.
 

Similar threads

Replies
1
Views
2K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 0 ·
Replies
0
Views
3K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 2 ·
Replies
2
Views
1K
  • · Replies 17 ·
Replies
17
Views
2K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 14 ·
Replies
14
Views
1K