Quantum information theory (qics.quantum)

This module contains several helper functions to perform operations which commonly arise in quantum information theory. This module also contains the submodule random which contains functions used to generate random quantum states, channels, or other operators.

entropy(x)	Computes classical or quantum entropy
i_kr(mat, dims, sys)	Kronecker product with the identity matrix
p_tr(mat, dims, sys)	Partial trace of a multipartite state
partial_transpose(mat, dims, sys)	Partial transpose of a multipartite state
purify(X)	Computes the purification of a quantum state
swap(mat, dims, sys1, sys2)	Swaps two subsystems of a multipartite state

Random quantum objects (qics.quantum.random)

choi_operator(nin[, nout, M, iscomplex])	Random Choi operator corresponding to a quantum channel
degradable_channel(nin[, nout, nenv, iscomplex])	Random isometry matrix corresponding to a degradable channel
density_matrix(n[, iscomplex])	Random density matrix
pure_density_matrix(n[, iscomplex])	Random rank one density matrix
stinespring_operator(nin[, nout, nenv, iscomplex])	Random Stinespring isometry corresponding to a degradable channel
unitary(n[, iscomplex])	Random unitary matrix