Bell's inequality and universal quantum gates in a cold atom chiral fermionic p-wave superfluid

Details Bell's inequality and universal quantum gates in a cold atom chiral fermionic p-wave superfluid Bell's inequality and universal quantum gates in a cold atom chiral fermionic p-wave superfluid

2007-05-31

arxiv.org/abs/0705.4647v3

Phys. Rev. Lett., 99, 220502 (2007)

Physics

Quantum Physics

4+ pages, 3 figures, display problems of figures in previous version are corrected, accepted for publication in PRL

Scientific paper

10.1103/PhysRevLett.99.220502

We propose and analyze a probabilistic scheme to entangle two spatially separated topological qubits in a $p_{x}+ip_{y}$ superfluid using controlled collisions between atoms in movable dipole traps and unpaired atoms inside vortex cores in the superfluid. We discuss how to test the violation of Bell's inequality with the generated entanglement. A set of universal quantum gates is shown to be implementable \textit{deterministically} using the entanglement despite the fact that the entangled states can only be created probabilistically.

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