Teleporting the one-qubit state via two-level atoms with spontaneous emission

Details Teleporting the one-qubit state via two-level atoms with spontaneous emission Teleporting the one-qubit state via two-level atoms with spontaneous emission

2011-11-25

arxiv.org/abs/1111.5964v1

Journal of Physics B: Atomic, Molecular and Optical Physics, 2011, 44(9): 095502

Physics

Quantum Physics

14 pages, 6 figures

Scientific paper

10.1088/0953-4075/44/9/095502

We study quantum teleportation via two two-level atoms coupled collectively to a multimode vacuum field and prepared initially in different atomic states. We concentrated on influence of the spontaneous emission, collective damping and dipole-dipole interaction of the atoms on fidelity dynamics of quantum teleportation and obtained the region of spatial distance between the two atoms over which the state can be teleported nonclassically. Moreover, we showed through concrete examples that entanglement of the channel state is the prerequisite but not the only essential quantity for predicting the teleportation fidelity.

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