Hamburg 2009 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
A: Fachverband Atomphysik
A 1: Plasma Interactions / Rydberg Atoms
A 1.4: Vortrag
Montag, 2. März 2009, 12:00–12:15, VMP 6 HS-B
Mesoscopic Rydberg Gate based on Electromagnetically Induced Transparency — •Markus Müller1, Igor Lesanovsky1, Hendrik Weimer2, Hans-Peter Büchler2, and Peter Zoller1 — 1Institute for Theoretical Physics, University of Innsbruck, and Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences, Innsbruck, Austria — 2Institute for Theoretical Physics III, University of Stuttgart, Germany
We demonstrate theoretically a parallelized CNOT 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. By this we can robustly implement a conditional coherent transfer of all ensemble atoms among two logical states, depending on the state of the control atom. As an application, we outline a many-body interferometer which allows a comparison of two many-body quantum states by performing a measurement of the control atom. Finally, we discuss perspectives of the gate as a building block for quantum simulators of Hamiltonians with few-body interactions.