Density Matrix of Unpolarized Light

Thread starter annaphys
Start date Oct 30, 2019
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Density Density matrix Light Matrix

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The discussion centers on difficulties in solving specific problems related to the density matrix of unpolarized light. The user seeks guidance on how to approach problem 31.i and mentions challenges with problem 29.iii. It is noted that in a purely statistical mixture, the density matrix is characterized by probabilities on the diagonal and zeros elsewhere. The conversation highlights the importance of understanding the structure of the density matrix in relation to unpolarized light. Overall, the thread emphasizes the need for foundational knowledge in quantum mechanics to tackle these problems effectively.

Oct 30, 2019

annaphys

Homework Statement: Attached 31.i and ii

Relevant Equations: Attached

I have unfortunately no attempt for 31.i. I don't know how to start the problem. 31.ii is attached. Can someone give me a tip on how to start 31.i? I also have troubles solving 29.iii. I have attached that as well.

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Nov 4, 2019

DrClaude

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When you have a purely statistical mixture, the density matrix contains the probabilities of the different outcomes on the diagonal and zeros everywhere else.

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