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arXiv 1209.2252quant-ph
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使用量子漫步的量子Parrondo博弈

Quantum Parrondo's games using quantum walks

Adrian P. Flitney

摘要:

我们使用两种不同的“硬币”算子研究了一维量子行走。通过混合两个运算符,这两个运算符都给出了具有负期望值的步行者位置的有偏步行,可以通过干扰效应来逆转偏差。这种效应类似于Parrondo的游戏,其中交替两个失败的(赌博)游戏可以产生一个获胜的游戏。步行者偏差是通过在硬币运算符中引入相位因子而产生的,其中两个不同的相位因子给出了游戏$A$和$B$。我们给出的范围内的相位的Parrondo效应可以得到与$A$和$B$交替播放或在其他(重复)确定性序列。效果是暂时的。对于足够大的时间,原始的偏见恢复。

英文摘要:

We study a quantum walk in one-dimension using two different "coin" operators. By mixing two operators, both of which give a biased walk with negative expectation value for the walker position, it is possible to reverse the bias through interference effects. This effect is analogous to that in Parrondo's games, where alternating two losing (gambling) games can produce a winning game. The walker bias is produced by introducing a phase factor into the coin operator, with two different phase factors giving games $A$ and $B$. We give the range of phases for which the Parrondo effect can be obtained with $A$ and $B$ played alternately or in other (repeated) deterministic sequences. The effect is transitory. For sufficiently large times the original bias resumes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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