The discussion revolves around the computation of the density matrix for Alice's particle when she and Bob share a Bell pair, specifically the state |00⟩ + |11⟩. Participants are exploring the theoretical aspects of quantum mechanics related to entanglement and density matrices.
There is no clear consensus on the method for computing the density matrix, and multiple viewpoints regarding the approach and prior effort remain present.
Participants have not provided specific mathematical steps or definitions, and there is a lack of clarity on the assumptions involved in the computation of the density matrix.
Individuals interested in quantum mechanics, particularly those studying entanglement and density matrices, may find this discussion relevant.
This is PF, we ask you to first look it up and show us what you have done so far before commenting on it.Heidi said:Hi Pfs
If Bob and Alice share a bell pair 0>0> + 1>1>
I cannot remember , how Alice compute the density matrix of hes own particle.
thanks.
Again it is not about what you remember but what effort have you done so far. Have you look up for "density matrix and entanglement"?Heidi said:I remember that we wrote a 4 by matrix in a set of 4 by 4 matrix
and summing for ech ons 2 values and getting what Alice density matrix has.
I had a stroke in my brain 2 months ago and i still have problems.
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