Quantum communication between trapped ions through a dissipative environment

Details Quantum communication between trapped ions through a dissipative environment Quantum communication between trapped ions through a dissipative environment

2008-05-23

arxiv.org/abs/0805.3711v1

J. Phys. A: Math. Theor. 42 182001 (2009)

Physics

Quantum Physics

4 pages, 2 figures

Scientific paper

10.1088/1751-8113/42/18/182001

We study two trapped ions coupled to the axial phonon modes of a one-dimensional Coulomb crystal. This system is formally equivalent to the "two spin-boson" model. We propose a scheme to dynamically generate a maximally entangled state of two ions within a decoherence-free subspace. Here the phononic environment of the trapped ions, whatever its temperature and number of modes, serves as the entangling bus. The efficient production of the pure singlet state can be exploited to perform short-ranged quantum communication which is essential in building up a large-scale quantum computer.

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