Bob and Alice share a Bell pair represented as |00⟩ + |11⟩. To compute the density matrix for Alice's particle, one must construct a 4x4 matrix and sum specific values corresponding to Alice's measurements. The discussion emphasizes the importance of prior research on "density matrix and entanglement" before seeking assistance. The user also mentions personal challenges affecting their memory and understanding.
PREREQUISITESQuantum physicists, students studying quantum mechanics, and anyone interested in understanding the computation of density matrices in entangled systems.
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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