Ion trap quantum gates with amplitude-modulated laser beams

By C. F. Roos. 2007

151 citations recorded by the source corpus.

In ion traps, entangling gate operations can be realized by a bichromatic pair of laser beams that collectively interact with the ions. In this paper, a new method of modelling the laser–ion interaction is introduced that turns out to be superior to standard techniques for the description of gate operations on optical qubits. The treatment allows for a comparison of the performance of gates based on σz⊗σz and σϕ⊗σϕ interactions on optical transitions where the bichromatic laser field can be realized by an amplitude-modulated laser resonant with the qubit transition. Shaping the amplitude of the bichromatic laser pulse is shown to make the gates more robust against experimental imperfections.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/f3a8a3a78ff6f83e5321334124243abb7cdadcf6

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In Artificial Intelligence

In Atomic and Molecular Physics, and Optics

Citations in the corpus

Quantum computing with trapped ions (2008, background): “A gate very closely related to the geometric phase gate is the Mølmer-Sørensen gate (Sørensen and Mølmer, 1999; Mølmer and Sørensen, 1999; Sørensen and Mølmer, 2000; Roos, 2008).”
Engineered Open Systems and Quantum Simulations with Atoms and Ions (2012, background): “In particular, multi-ion entangling gates have been realized with fidelities higher than 99% for two ions (Benhelm et al., 2008; Roos, 2008), and for up to 14 qubits (Monz et al.”