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Results tagged with quantum-optics
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user 25999
A research field within general optical physics concerned with light and its material interaction: where light is modelled by full quantum mechanical description.
1
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Excitation probability for 2 Level Atom
The atom is interacting with rectangular impulse of length t, modulated with frequency of $\omega$. The more energy is pumped to the atom on its resonance frequency, the more probability of its excita …
- 165
10
votes
3
answers
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Commutator with a square root
How to find the commutator $[a, \sqrt{a^\dagger a}]$? Here $a$ is a usual bosonic annihilation operator, and $[a, a^\dagger] = 1$.
The first thing I tried is
$$
[x,A] = [x, \sqrt{A}]\sqrt{A} + \sqrt{ …
- 165