Explicit formula for the external driving field used to eliminate the decoherence of a two-state system coupled to a noise field

Details Explicit formula for the external driving field used to eliminate the decoherence of a two-state system coupled to a noise field Explicit formula for the external driving field used to eliminate the decoherence of a two-state system coupled to a noise field

2004-07-16

arxiv.org/abs/quant-ph/0407124v1

Physics

Quantum Physics

6 pages, 2 figures

Scientific paper

The elimination of decoherence of a multiphoton two-state quantum system by using an appropriate external driving field is considered. The multiphoton process caused by the noise field has a supersymmetric Lie algebraic structure. The time-evolution equations for the off-diagonal elements of the density operator of the two-state system are derived in the interaction picture. A simple explicit formula is given for the time-dependent external driving field used to eliminate the decoherence of the multiphoton two-state system.

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