Concentration and purification of entanglement for qubit systems with ancillary cavity fields


Autoria(s): Ogden, Christopher; Paternostro, Mauro; Kim, Myungshik
Data(s)

23/04/2007

Resumo

We propose schemes for entanglement concentration and purification for qubit systems encoded in flying atomic pairs. We use cavity-quantum electrodynamics as an illustrative setting within which our proposals can be implemented. Maximally entangled pure states of qubits can be produced as a result of our protocols. In particular, the concentration protocol yields Bell states with the largest achievable theoretical probability while the purification scheme produces arbitrarily pure Bell states. The requirements for the implementation of these protocols are modest, within the state of the art, and we address all necessary steps in two specific setups based on experimentally mature microwave technology.

Identificador

http://pure.qub.ac.uk/portal/en/publications/concentration-and-purification-of-entanglement-for-qubit-systems-with-ancillary-cavity-fields(0859192b-c732-4faa-a87b-22b13f1090bb).html

http://dx.doi.org/10.1103/PhysRevA.75.042325

http://www.scopus.com/inward/record.url?scp=34247332732&partnerID=8YFLogxK

Idioma(s)

eng

Direitos

info:eu-repo/semantics/restrictedAccess

Fonte

Ogden , C , Paternostro , M & Kim , M 2007 , ' Concentration and purification of entanglement for qubit systems with ancillary cavity fields ' Physical Review A , vol 75 , no. 4 , 042325 , pp. 042325-042326 . DOI: 10.1103/PhysRevA.75.042325

Palavras-Chave #/dk/atira/pure/subjectarea/asjc/3100/3107 #Atomic and Molecular Physics, and Optics #/dk/atira/pure/subjectarea/asjc/3100 #Physics and Astronomy(all)
Tipo

article