论文标题
量子计量学的量子信息技术
Quantum Information Techniques for Quantum Metrology
论文作者
论文摘要
量子计量学是量子信息的吉祥学科，目前正在见证实验性突破和理论发展的激增。量子计量学的主要目标是尽可能准确地估算未知参数。通过使用量子资源作为探针，可以实现一种测量精度，否则使用最佳的经典策略将是不可能的。例如，关于阶段估计的任务，相对于最佳的经典策略，最高精度（海森堡极限）是二次增益。当然，量子计量学不是目前正在进行进步的唯一量子技术。本文的主题是探讨如何在适当的情况下使用其他量子技术来增强量子计量学，即：图状态，误差校正和密码学。
Quantum metrology is an auspicious discipline of quantum information which is currently witnessing a surge of experimental breakthroughs and theoretical developments. The main goal of quantum metrology is to estimate unknown parameters as accurately as possible. By using quantum resources as probes, it is possible to attain a measurement precision that would be otherwise impossible using the best classical strategies. For example, with respect to the task of phase estimation, the maximum precision (the Heisenberg limit) is a quadratic gain in precision with respect to the best classical strategies. Of course, quantum metrology is not the sole quantum technology currently undergoing advances. The theme of this thesis is exploring how quantum metrology can be enhanced with other quantum techniques when appropriate, namely: graph states, error correction and cryptography.
