Physics – Quantum Physics
Scientific paper
2006-08-21
J. Phys. B: At. Mol. Opt. Phys. 40, S221-S228 (2007)
Physics
Quantum Physics
5 pages, 1 figure, detailed comments on the practical implementation of the scheme is added to replaced version, minor typos f
Scientific paper
10.1088/0953-4075/40/9/S14
We propose a scheme for generation of maximally entangled states involving internal electronic degrees of freedom of two distant trapped ions, each of them located in a cavity. This is achieved by using a single flying atom to distribute entanglement. For certain specific interaction times, the proposed scheme leads to the non-probabilistic generation of a perfect Bell-type state. At the end of the protocol, the flying atom completely disentangles from the rest of the system, leaving both ions in a Bell-type state. Moreover, the scheme is insensitive to the cavity field state and cavity losses. We also address the situation in which dephasing and dissipation must be taken into account for the flying atom on its way from one cavity to the other, and discuss the applicability of the resulting noisy channel for performing quantum teleportation.
Furuya Ken
Missori R. J.
Semião Fernando L.
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