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arXiv 0705.0017quant-phcs.ET
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量子线路和量子态的等价性检验

Checking Equivalence of Quantum Circuits and States

George F. Viamontes, Igor L. Markov, John P. Hayes

摘要:

量子计算有望为重要的模拟和优化问题提供指数级加速。它还提出了新的CAD问题,这些问题与经典(非量子)CAD中的相关问题类似,但更具挑战性,例如确定两个状态或电路是否功能等效。虽然经典态的差异很容易检测,但由复值向量表示的量子态表现出微妙的差异,导致几个等价概念。这为优化量子线路提供了灵活性,但也为模拟和综合带来了新的等价性检查难题。我们确定了几个不同的等价性检查问题,并提出了用于实际基准的算法,包括量子通信和搜索电路,这些算法对于数百个量子比特来说非常快速和鲁棒。

英文摘要:

Quantum computing promises exponential speed-ups for important simulation and optimization problems. It also poses new CAD problems that are similar to, but more challenging, than the related problems in classical (non-quantum) CAD, such as determining if two states or circuits are functionally equivalent. While differences in classical states are easy to detect, quantum states, which are represented by complex-valued vectors, exhibit subtle differences leading to several notions of equivalence. This provides flexibility in optimizing quantum circuits, but leads to difficult new equivalence-checking issues for simulation and synthesis. We identify several different equivalence-checking problems and present algorithms for practical benchmarks, including quantum communication and search circuits, which are shown to be very fast and robust for hundreds of qubits.

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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