Information-theoretic aspects of inseparability of mixed states
Abstract
Information-theoretic aspects of quantum inseparability of mixed states are investigated in terms of the α entropy inequalities and teleportation fidelity. Inseparability of mixed states is defined and a complete characterization of the inseparable 2×2 systems with maximally disordered subsystems is presented within the Hilbert-Schmidt space formalism. A connection between teleportation and negative conditional α entropy is also emphasized.
- Publication:
-
Physical Review A
- Pub Date:
- September 1996
- DOI:
- 10.1103/PhysRevA.54.1838
- arXiv:
- arXiv:quant-ph/9607007
- Bibcode:
- 1996PhRvA..54.1838H
- Keywords:
-
- 03.65.Bz;
- 42.50.Dv;
- 89.70.+c;
- Nonclassical states of the electromagnetic field including entangled photon states;
- quantum state engineering and measurements;
- Information theory and communication theory;
- Quantum Physics
- E-Print:
- Revtex, 19 pages, to appear in Phys. Rev. A, vol. 54