退相干抑制对几何相位的增强：一种Parrondo效应
Enhancement of Geometric Phase by Frustration of Decoherence: A Parrondo like Effect
摘要：
几何相位在纯态或混合量子态的演化过程中起着重要的作用。然而，当系统经历退相干时，几何相位的发展可能被抑制。在这里，我们表明，当一个量子系统与两个竞争的环境相互作用时，可以有几何相位的增强。这种效应类似于退相干的量子阻挫对几何相位的Parrondo效应。我们的结果表明，两个竞争退相干的机制，可以在容错完整量子计算是有用的。
英文摘要：
Geometric phase plays an important role in evolution of pure or mixed quantum states. However, when a system undergoes decoherence the development of geometric phase may be inhibited. Here, we show that when a quantum system interacts with two competing environments there can be enhancement of geometric phase. This effect is akin to Parrondo like effect on the geometric phase which results from quantum frustration of decoherence. Our result suggests that the mechanism of two competing decoherence can be useful in fault-tolerant holonomic quantum computation.
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