Published March 2010 | Version v1
Journal article Metadata-only

Optimal universal asymmetric covariant quantum cloning circuits for qubit entanglement manipulation

Creators

  • 1. Institute of Physics, University of Pecs, H-7624 Pecs, Ifjusag utja 6, Hungary and Research Institute for Solid State Physics and Optics, Hungarian Academy of Sciences, H-1525 Budapest, P.O. Box 49 (Hungary)
  • 2. Institute of Physics, University of Pecs, H-7624 Pecs, Ifjusag utja 6, Hungary and Research Group for High Performance Computing, SP Project Office, University of Pecs, H-7633 Pecs, Szanto Kovacs Janos u. 1/B (Hungary)
  • 3. Institute of Physics, University of Pecs, H-7624 Pecs, Ifjusag utja 6 (Hungary)

Description

We consider the entanglement manipulation capabilities of the universal covariant quantum cloner or quantum processor circuit for quantum bits. We investigate its use for cloning a member of a bipartite or a genuine tripartite entangled state of quantum bits. We find that for bipartite pure entangled states a nontrivial behavior of concurrence appears, while for GHZ entangled states a possibility of the partial extraction of bipartite entanglement can be achieved.

Additional details

Identifiers

DOI
10.1103/PhysRevA.81.032323;
arXiv
arXiv:0911.4356v1;

Publishing Information

Journal Title
Physical Review. A
Journal Volume
81
Journal Issue
3
Journal Page Range
p. 032323-032323.6
ISSN
1050-2947
CODEN
PLRAAN

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
42001559
Subject category
S74: ATOMIC AND MOLECULAR PHYSICS;
Descriptors DEI
ASYMMETRY; GHZ RANGE; QUANTUM ENTANGLEMENT; QUBITS
Descriptors DEC
FREQUENCY RANGE; INFORMATION; QUANTUM INFORMATION

Optional Information

Notes
(c) 2010 The American Physical Society