Peres–Horodecki criterion. The Peres–Horodecki criterion is a necessary condition, for the joint density matrix of two quantum mechanical systems and In higher dimensions, the test is inconclusive, and one should supplement it with more advanced tests, such as those based on entanglement witnesses.
Werner state. .
That is, it is a quantum state ρ that satisfies for all unitary operators U acting on d-dimensional Hilbert space. where are the projectors and. D-Wave, The Quantum Computing Company. Quantum-notes.pdf (application/pdf Object) Quantum computation: a tutorial. Next: Computing at the atomic scale Samuel L.
Braunstein.