Mesoscopic Rydberg Gate based on Electromagnetically Induced Transparency

Details Mesoscopic Rydberg Gate based on Electromagnetically Induced Transparency Mesoscopic Rydberg Gate based on Electromagnetically Induced Transparency

2008-11-07

arxiv.org/abs/0811.1155v2

Phys. Rev. Lett. 102, 170502 (2009)

Physics

Quantum Physics

published version

Scientific paper

We demonstrate theoretically a parallelized C-NOT gate which allows to entangle a mesoscopic ensemble of atoms with a single control atom in a single step, with high fidelity and on a microsecond timescale. Our scheme relies on the strong and long-ranged interaction between Rydberg atoms triggering Electromagnetically Induced Transparency (EIT). By this we can robustly implement a conditional transfer of all ensemble atoms among two logical states, depending on the state of the control atom. We outline a many body interferometer which allows a comparison of two many-body quantum states by performing a measurement of the control atom.

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