Mesoscopic Rydberg gate based on electromagnetically induced transparency.
We demonstrate theoretically a parallelized C-NOT gate which allows us to entangle a mesoscopic ensemble of atoms with a single control atom in a single step, with high fidelity and on a microsecond time scale. Our scheme relies on the strong and long-ranged interaction between Rydberg atoms triggering electromagnetically induced transparency. By this we can robustly implement a conditional transfer of all ensemble atoms between 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.
Müller
M
M
Institute for Theoretical Physics, University of Innsbruck, A-6020 Innsbruck, Austria.
Lesanovsky
I
I
Weimer
H
H
Büchler
H P
HP
Zoller
P
P