QUROPE Quantum Information Processing and Communication in Europe

K. Mølmer (P9 UAARHUS), invited talk, Collective qubits and hybrid schemes for quantum computing 

K. Mølmer (P9 UAARHUS), invited talk, Quantum Computing and communication with collective encoding

K. Mølmer (P9 UAARHUS), invited talk, Quantum optical states of interacting atoms and light

K. Mølmer (P9), invited talk, September 6, 2010, Rydberg blockade schemes for entanglement of atoms and light

T. Wilk (P2b), poster, Entangling two individual atoms using the Rydberg blockade

K. Mølmer (P9 UAARHUS), invited talk, Strategies for hybrid quantum computing with spins and superconducting devices,

K. Mølmer (P9 UAARHUS), invited talk, Quantum Information and Quantum Optics with Rydberg excitation blockade

We propose to use a permutation symmetric sample of multi-level atoms to simulate the properties of topologically ordered states. The Rydberg blockade interaction is used to prepare states of the sample which are equivalent to resonating valence bond states, Laughlin states, and string-net condensates and to create and study the properties of their quasi-particle-like fundamental excitations.

We propose to implement the Jaynes-Cummings model by coupling a few-micrometer large atomic ensemble to a quantized cavity mode and classical laser fields. A two-photon transition resonantly couples the single-atom ground state |g> to a Rydberg state |e> via a non-resonant intermediate state |i>, but due to the interaction between Rydberg atoms only a single atom can be resonantly excited in the ensemble.