A coherence preservation control strategy in cavity QED based on classical quantum feedback.
A coherence preservation control strategy in cavity QED based on classical quantum feedback.
复制标题
基于经典量子反馈的腔QED相干性保持控制策略
DOI:
10.1155/2013/340917
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发表时间:
2013
影响因子:
--
通讯作者:
Gao J
中科院分区:
文献类型:
--
作者:
Li M;Chen W;Gao J
For eliminating the unexpected decoherence effect in cavity quantum electrodynamics (cavity QED), the transfer function of Rabi oscillation is derived theoretically using optical Bloch equations. In particular, the decoherence in cavity QED from the atomic spontaneous emission is especially considered. A feedback control strategy is proposed to preserve the coherence through Rabi oscillation stabilization. In the scheme, a classical quantum feedback channel for the quantum information acquisition is constructed via the quantum tomography technology, and a compensation system based on the root locus theory is put forward to suppress the atomic spontaneous emission and the associated decoherence. The simulation results have proved its effectiveness and superiority for the coherence preservation.
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