Purification of genuine multipartite entanglement

• Autoři: HUBER Marcus; PLESCH Martin
• Rok publikování: 2011
• Druh: Článek v odborném periodiku
• Časopis / Zdroj: Physical Review A
• Fakulta / Pracoviště MU: Fakulta informatiky
• www: http://pra.aps.org/abstract/PRA/v83/i6/e062321
• Doi: http://dx.doi.org/10.1103/PhysRevA.83.062321
• Obor: Teoretická fyzika
• Klíčová slova: quantum destillation
• Popis: In tasks where multipartite entanglement plays a central role, state purification is, due to inevitable noise, a crucial part of the procedure. We consider a scenario exploiting the multipartite entanglement in a straightforward multipartite purification algorithm and compare it to bipartite purification procedures combined with state teleportation. While complete purification requires an infinite amount of input states in both cases, we show that for an imperfect output fidelity the multipartite procedure exhibits a major advantage in terms of input states used.

Související projekty

• Účast ČR v European Research Consortium for Informatics and Mathematics
• Physical Aspects of Quantum Information Theory