Faculty of Physics - University of Bucharest

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FACULTY OF PHYSICS

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2024-11-22 2:08

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Conference: Bucharest University Faculty of Physics 2010 Meeting

Section: Theoretical Physics and Applied Mathematics

Title:

Imperfect many-to-many quantum teleportation

Authors:

Iulia Ghiu (1), Tudor Isdraila (2), and Serban Suciu (2)

Affiliation:

(1) Centre for Advanced Quantum Physics, University of Bucharest, PO Box MG-11, R-077125, Bucharest-Magurele, Romania;

(2) Department of Physics, University of Bucharest, PO Box MG-11, R-077125, Bucharest-Magurele, Romania

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Keywords:

entanglement, quantum teleportation

Abstract:

The many-to-many quantum teleportation is a protocol, where the information of a d-level system is broadcast from N spacially separated senders to M receivers situated at different locations [1]. We present a generalization of the many-to-many teleportation, which uses a nonmaximally entangled state as a quantum channel shared between the senders and receivers. In addition, we consider that the senders perform measurements in the so-called generalized Bell basis [2], which is defined with the help of a parameter m. Further we compute the average fidelity of the final state in this process. [1] Iulia Ghiu, Phys. Rev. A 67, 012323 (2003). [2] G. Gordon and G. Rigolin, Phys. Rev. A 73, 042309 (2006).