Dynamical suppression of decoherence in two-qubit quantum memory

被引：3
|
作者：
Liu, XS [1 ]
Liu, Y
机构：
[1] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China
[2] Key Lab Quantum Informat & Measurements, Beijing 100084, Peoples R China
来源：
COMMUNICATIONS IN THEORETICAL PHYSICS | 2005年 / 44卷 / 03期
关键词：
decoherence suppression; quantum memory; bang-bang technique; Ising model;
D O I：
10.1088/6102/44/3/459
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In this paper, we have detailedly studied the dynamical suppression of the phase damping for the two-qubit quantum memory of Ising model by the quantum "bang-bang" technique. We find the sequence of periodic radio-frequency pulses repetitively to Rip the state of the two-qubit system and quantitatively find that these pulses can be used to effectively suppress the phase damping decoherence of the quantum memory and freeze the system state into its initial state. The general sequence of periodic radio-frequency pulses to suppress the phase damping of multi-qubit of Ising model is also given.
引用
收藏
页码：459 / 462
页数：4
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