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Two‐mode Schrödinger cats, entanglement and teleportation
Author(s) -
Janszky J.,
Asbóth J.,
Gábris A.,
Vukics A.,
Koniorczyk M.,
Kobayashi T.
Publication year - 2003
Publication title -
fortschritte der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.469
H-Index - 71
eISSN - 1521-3978
pISSN - 0015-8208
DOI - 10.1002/prop.200310020
Subject(s) - teleportation , quantum entanglement , quantum mechanics , physics , qubit , schrödinger's cat , quantum teleportation , superdense coding , generalization , fidelity , mathematics , quantum channel , quantum , computer science , telecommunications , mathematical analysis
Abstract Two‐mode Schrödinger cats consisting of two and four coherent‐state terms are considered. It is shown that they are closely related to the quadrature entangled EPR pair. The properties of their wave functions are investigated from their aspects of entanglement. It is shown that at certain parameters the entangled properties of the two‐mode Schrödinger cats allow for good teleportation fidelity. A theoretical generalization to the teleportation of two qubits is also discussed.