Abstract
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 |
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Original language | English |
Article number | Art. No. 207901 |
Journal | Physical Review Letters |
Volume | 89 (20) |
Publication status | Published - 11 Nov 2002 |
Bibliographical note
Publisher: American Physical SocOther identifier: IDS number 610AL