Hannover 2016 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 54: Quantum Information: Quantum Computing and Communication II

Q 54.6: Talk

Thursday, March 3, 2016, 15:45–16:00, e214

Atomic two-qubit quatum operations assisted by multiphoton states — •Juan Mauricio Torres, József Zsolt Bernád, Ludwig Kunz, and Gernot Alber — Institut für Angewandte Physik, Technische Universität Darmstadt, D-64289 Germany

We compare two schemes to implement quantum operations on atomic qubits. In one of them two two-level atoms interact one after the other with the electromagnetic field inside an optical resonator. In the second scheme, the two atoms interact simultaneously with the optical field. We show that in both cases, two-qubit entangling operations can be performed by measuring the field state inside the resonator with a balanced homodyne detection. To complete the description we analyze the effects of photon losses in the performance of the protocol.