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Tagged with coherence quantum-entanglement
4
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Entanglement and coherence
I have come across a wonderful review of entanglement by Chris Drost in his answer to this post. One part that left me puzzled was: (This post is merely an attempt to understand a portion of Chris' ...
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What is coherence in quantum mechanics?
What are coherence and quantum entanglement? Does it mean that two particles are the same?
I read this in a book called Physics of the Impossible by Michio Kaku. He says that two particles behave in ...
user29660
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votes
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answer
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Relationships between elements in the density matrix
Say we have a density matrix for a spin-1 system given by:
$$
\hat \rho = \left[\begin{array} A \hat \rho_{00}& \hat \rho_{01} & \hat \rho_{02} \\
\hat \rho_{10} & \hat \rho_{11} & \...
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Coherence, Entanglement, Correlation
Let's deal specifically with a two-level system. I understand that ``coherence'' is due to the off-diagonal elements in the density matrix $\rho(t) = \sum_{i}|\psi_i(t)\rangle p_i\langle\psi_i(t)|$ ...
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