In a system of n quantum particles, we define a measure of the degree of irreducible n-way correlation, by which we mean the correlation that cannot be accounted for by looking at the states of n - 1 particles. In the case of almost all pure states of three qubits, we show that there is no such correlation: almost every pure state of three qubits is completely determined by its two-particle reduced density matrices.
|Translated title of the contribution||Almost every pure state of three qubits is completely determined by its two-particle reduced density matricies|
|Article number||Art. No. 207901|
|Journal||Physical Review Letters|
|Publication status||Published - 11 Nov 2002|
Bibliographical notePublisher: American Physical Soc
Other identifier: IDS number 610AL