Question

What's the physical meaning of the eigenvalues of the spin-flipped density matrix?

Answer 1

Hey mate ^_^

In the computation of the entanglement of formation(EoF) of a 2 qubits mixed state, ρρ, according to Wooters, we need to compute the concurrence of the state by computing the eigen values {σ1,σ2,σ3,σ4}{σ1,σ2,σ3,σ4}of the matrix ρ−−√ρ~ρ−−√−−−−−−√ρρ~ρ, with ρ~ρ~ is the spin flipped matrix defined as ρ~=(iσ2⊗iσ2)ρ∗(iσ2⊗iσ2)ρ~=(iσ2⊗iσ2)ρ∗(iσ2⊗iσ2).

#Be Brainly❤️

Answer 2

Hello mate here is your answer.

In the computation of the entanglement of formation(EoF) of a 2 qubits mixed state, ρρ, according to Wooters, we need to compute the concurrence of the state by computing the eigen values {σ1,σ2,σ3,σ4}{σ1,σ2,σ3,σ4} of the matrix ρ−−√ρ~ρ−−√−−−−−−√ρρ~ρ, with ρ~ρ~ is the spin flipped matrix defined as ρ~=(iσ2⊗iσ2)ρ∗(iσ2⊗iσ2)ρ~=(iσ2⊗iσ2)ρ∗(iσ2⊗iσ2).

Hope it helps you.