量子退火中的非平衡功
Nonequilibrium work performed in quantum annealing
摘要：
量子退火是经典优化问题的通用求解器，它充分利用了量子涨落。我们考虑工作统计的量子退火过程的重复，采用Jarzynski等式提出的非平衡统计物理。特别是，我们分析了横向场所做的工作的分布。在自旋玻璃理论中，一种特殊的对称性，规范对称性，导致了量子退火向不同目标之间的非平凡关系。我们相信，我们的结果将是一个替代实现有效的量子计算，以及我们更好地了解量子控制下的系统的非平衡行为的一步。
英文摘要：
Quantum annealing is a generic solver of classical optimization problems that makes full use of quantum fluctuations. We consider work statistics given by a repetition of quantum annealing processes by employing the Jarzynski equality proposed in nonequilibrium statistical physics. In particular, we analyze the distribution of the work performed by a transverse field. A special symmetry, gauge symmetry, leads to a non-trivial relationship between quantum annealing toward different targets in the theory of spin glasses. We believe that our results will be a step toward an alternative realization of efficient quantum computation as well as our better understanding of nonequilibrium behavior of systems under quantum control.
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