0000000000431228

AUTHOR

A. Negretti

showing 2 related works from this author

Performance of quantum phase gates with cold trapped atoms

2003

We examine the performance of a quantum phase gate implemented with cold neutral atoms in microtraps, when anharmonic traps are employed and the effects of finite temperature are also taken into account. Both the anharmonicity and the temperature are found to pose limitations to the performance of the quantum gate. We present a quantitative analysis of the problem and show that the phase gate has a high quality performance for the experimental values that are presently or in the near future achievable in the laboratory.

Quantum PhysicsFOS: Physical sciencesInstitut für Physik und AstronomiePhysics::Atomic PhysicsQuantum Physics (quant-ph)
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Quantum control theory for decoherence suppression in quantum gates

2007

We show how quantum optimal control theory can help achieve high-fidelity quantum gates in real experimental settings. We discuss several optimization methods (from iterative algorithms to optimization by interference and to impulsive control) and different physical scenarios (from optical lattices to atom chips and to Rydberg atoms).

PhysicsQuantum technologyOpen quantum systemQuantum networkPhysics and Astronomy (miscellaneous)Quantum error correctionQuantum mechanicsQuantum algorithmPhysics::Atomic PhysicsQuantum informationQuantum dissipationQuantum computer
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