Entanglement map · Established

Partly entangled pure states concentrate into singlets

Proved, with a source.

With many copies of a partly entangled pure state, local operations can produce a smaller number of maximally entangled pairs, and this is what gives the entropy its operational meaning.

Connections

• Part of: Conversion
• See also: When a measure must equal the reduced entropy on pure states

Sources

• Concentrating partial entanglement by local operations. C. H. Bennett, H. J. Bernstein, S. Popescu, B. Schumacher, 1995.

Checked 2026-10-30.