Marcus Muller 21/04

Digital Quantum Simulation with Rydberg Atoms
Marcus Muller (IQOQI, U. Innsbruck Austria)

We propose and analyze a scheme where laser excited Rydberg atoms in large spacing lattices provide an efficient implementation of a universal quantum simulator for spin models. This includes the simulation of Hamiltonian dynamics of spin models involving n-particle interaction terms such as in Kitaev's toric code, color code, and lattice gauge theories. In addition, it provides the ingredients for dissipative preparation of entangled states based on engineering n-particle reservoir couplings. The key building blocks of our architecture are efficient and high-fidelity n-qubit entangling Rydberg gates, which combine electromagnetically induced transparency with strong and long-range Rydberg-Rydberg interactions. Including a possible dissipative time step via optical pumping, this allows to mimic both the coherent and dissipative time  evolution of the spin system by a sequence of fast, parallel and high-fidelity n-particle gates.

LUGAR: Facultad de Ciencias Fisicas, UCM
DIA: 21 DE ABRIL 2010 (miercoles)
HORA: 14:30
AULA: 5B (planta baja)