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Cavity QED and Quantum Computation in the Weak Coupling Regime

Kazuyuki Fujii·Kyoko Higashida·Ryosuke Kato·Yukako Wada
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Abstract

In this paper we consider a model of quantum computation based on n atoms of laser-cooled and trapped linearly in a cavity and realize it as the n atoms Tavis-Cummings Hamiltonian interacting with n external (laser) fields. We solve the Schr{\" o}dinger equation of the model in the case of n=2 and construct the controlled NOT gate by making use of a resonance condition and rotating wave approximation associated to it. Our method is not heuristic but completely mathematical, and the significant feature is a consistent use of Rabi oscillations. We also present an idea of the construction of three controlled NOT gates in the case of n=3 which gives the controlled-controlled NOT gate.

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Kazuyuki Fujii, Kyoko Higashida, Ryosuke Kato, Yukako Wada. 2004-09-21. Cavity QED and Quantum Computation in the Weak Coupling Regime. https://doi.org/10.1088/1464-4266/6/12/004

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