Detection of vacuum entanglement in a linear ion trap

Details Detection of vacuum entanglement in a linear ion trap Detection of vacuum entanglement in a linear ion trap

2004-08-08

arxiv.org/abs/quant-ph/0408059v2

Phys. Rev. Lett. 94, 050504 (2005)

Physics

Quantum Physics

4 pages 8 figures

Scientific paper

10.1103/PhysRevLett.94.050504

We propose and study a method for detecting ground-state entanglement in a chain of trapped ions, which realizes a suggested scheme for detecting vacuum entanglement in quantum field theory. We show that the entanglement between single ions or groups of ions can be swapped to the internal levels of two ions by sending laser pulses that couple the internal and motional degrees of freedom. This allows to entangle two ions without actually doing gates. A proof of principle of the effect can be realized with two trapped ions and is feasible with current technology.

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