Effect of noise on quantum teleportation

Deepak Kumar, ; Pandey, P. N. (2003) Effect of noise on quantum teleportation Physical Review A, 68 (1). 012317_1-012317_6. ISSN 1050-2947

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Official URL: http://pra.aps.org/abstract/PRA/v68/i1/e012317

Related URL: http://dx.doi.org/10.1103/PhysRevA.68.012317


The effect of noise on quantum teleportation of a spin-½ state using an entangled pair is studied. We calculate the time evolution of the density matrix of the three involved particles due to their coupling with the environmental degrees of freedom. We evaluate the fidelity of transmission as a function of time under a variety of conditions and compare the fidelities obtained for different entangled states. We find that for a generic coupling to environment, use of the singlet state for the entangled pair yields the highest fidelity in noisy conditions.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:9867
Deposited On:02 Nov 2010 10:35
Last Modified:31 May 2011 09:36

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