Measurable entanglement for tripartite quantum pure states of qubits

Details Measurable entanglement for tripartite quantum pure states of qubits Measurable entanglement for tripartite quantum pure states of qubits

2007-09-06

arxiv.org/abs/0709.0804v1

Physics

Quantum Physics

4 pages, 1 figure. Phys. Rev. A 76, 022324 (2007)

Scientific paper

10.1103/PhysRevA.76.022324

We show that for tripartite quantum pure states of qubits, all the kinds of entanglement in terms of SLOCC classification are experimentally measurable by simple projective measurements, provided that four copies of the composite quantum system are available. In particular, the entanglement of reduced density matrices, even though they are mixed states, can be exactly determined in experiment. Concurrence of assistance is also shown to be measurable by introducing an interesting equations with explicit physical meanings.

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