All Questions
Tagged with coherent-states laser
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Question about coherent population trapping
In coherent population trapping, if we denote the ground states in a $\Lambda$-like system as $|0\rangle$ and $|1 \rangle$ and the excited state $|2 \rangle$, there is a linear combination $|d \...
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How Does Laser Light Maintain Coherence Amid Photon-Atom Entanglement?
Laser light is known to produce "coherent state light," which consists of a superposition of different photon numbers. However, wouldn't the entanglement between the atoms and the light ...
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Can laser light be described by individual photons?
If laser light is described by a coherent state, a macroscopic quantum state, to what extent
does it make sense to speak of individual photons in laser light?
And if the laser is attenuated to be a ...
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Why is laser light described by a coherent state?
This is a follow-up to this recent answer by Wouter to this related question from 2015, and a comment by Emilio Pisanty underneath.
I have read the papers by Mølmer, Bartlett et al., Wiseman, and ...
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Laser power and coherent state amplitude
How it is possible to relate the power $P$ of a laser light with frequency $\omega$, to the amplitude $\alpha$ of its description as a coherent state $\vert \alpha \rangle$ ?
For a massive particle in ...
- 1,211
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4
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What is the electric field due to a coherent radiation? Is it polarized?
What is the time-structure (i.e., how does the magnitude and direction change with time) of the expectation value of the electric field $\langle\textbf{E}\rangle(t)$ of a radiation field described by ...
- 26.8k
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Definition of spatial and temporal coherence in QM?
It is often said that lasers are spatially and temporally coherent. Is there a simple definition of spatial and temporal coherence in the language of quantum mechanics? More specifically, can these be ...
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