Importing metrics from QuantumInterface.jl (#185)

Author: Hamiltonian-Action

Project.toml

@@ -25,7 +25,7 @@ FastGaussQuadrature = "0.5, 1"
 FillArrays = "0.13, 1"
 LRUCache = "1"
 LinearAlgebra = "1"
-QuantumInterface = "0.3.3"
+QuantumInterface = "0.3.9"
 Random = "1"
 RecursiveArrayTools = "3"
 SparseArrays = "1"

src/QuantumOpticsBase.jl

@@ -7,6 +7,9 @@ import RecursiveArrayTools
 import QuantumInterface: dagger, directsum, ⊕, dm, embed, nsubsystems, expect, identityoperator, identitysuperoperator,
         permutesystems, projector, ptrace, reduced, tensor, ⊗, variance, apply!, basis, AbstractSuperOperator
 
+# metrics
+import QuantumInterface: entropy_vn, fidelity, logarithmic_negativity
+
 # index helpers
 import QuantumInterface: complement, remove, shiftremove, reducedindices!, check_indices, check_sortedindices, check_embed_indices
 

src/metrics.jl

@@ -151,7 +151,6 @@ function entropy_vn(rho::DenseOpType{B,B}; tol=1e-15) where B
     end
     return entr
 end
-entropy_vn(psi::StateVector; kwargs...) = entropy_vn(dm(psi); kwargs...)
 
 """
     entropy_renyi(rho, α::Integer=2)