Publications Repository - Gdańsk University of Technology

We derive a simple lower bound on the geometric measure of entanglement for mixed quantum states in the case of a general multipartite system. The main ingredient of the presented derivation is the triangle inequality applied to the root infidelity distance in the space of density matrices. The obtained bound leads to entanglement criteria with a straightforward interpretation. The proposed criteria provide an experimentally accessible, powerful entanglement test.

Authors

• Łukasz Rudnicki,
• Zbigniew Puchała,
• prof. dr hab. Paweł Horodecki link open in new tab ,
• Karol Życzkowski