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arXiv · 1402.5177

Optimized Dynamical Decoupling in {\Xi}-Type n-Level Quantum Systems

Linping Chan·Shuang Cong
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Abstract

In this paper, we first design a type of Bang-Bang (BB) operation group to reduce the phase decoherence in a {\Xi}-type n-level quantum system based on the dynamical decoupling mechanism. Then, we derive two kinds of dynamical decoupling schemes: periodic dynamical decoupling (PDD) and Uhrig dynamical decoupling (UDD). We select the non-diagonal element of density matrix as a reference index, and investigate the behavior of quantum coherence of the {\Xi}-type n-level atom under these two dynamical decoupling schemes proposed. At last, we choose a {\Xi}-type six-level atom as a system controlled, and use the decoupling schemes proposed to suppress the phase decoherence. The simulation experiments and the comparison results are given.

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Linping Chan, Shuang Cong. 2014-02-21. Optimized Dynamical Decoupling in {\Xi}-Type n-Level Quantum Systems. https://arxiv.org/abs/1402.5177

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