保护性量子测量的性能优势

IF 2.9 2区物理与天体物理 Q2 Physics and Astronomy

Physical Review A Pub Date : 2024-09-17 DOI:10.1103/physreva.110.032215

Maximilian Schlosshauer

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引用次数: 0

摘要

我们将保护量子测量的性能与标准投影测量的性能进行了比较。性能用测量期望值的不确定性来量化。我们推导出这两类量子测量的相对性能表达式，并明确显示保护性测量比标准投影测量具有显著的性能优势。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Performance advantage of protective quantum measurements

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Performance advantage of protective quantum measurements

We compare the performance of protective quantum measurements to that of standard projective measurements. Performance is quantified in terms of the uncertainty in the measured expectation value. We derive an expression for the relative performance of these two types of quantum measurements and show explicitly that protective measurements can provide a significant performance advantage over standard projective measurements.

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来源期刊

Physical Review A 物理-光学

CiteScore

5.40

自引率

24.10%

发文量

审稿时长

2.2 months

期刊介绍： Physical Review A (PRA) publishes important developments in the rapidly evolving areas of atomic, molecular, and optical (AMO) physics, quantum information, and related fundamental concepts. PRA covers atomic, molecular, and optical physics, foundations of quantum mechanics, and quantum information, including: -Fundamental concepts -Quantum information -Atomic and molecular structure and dynamics; high-precision measurement -Atomic and molecular collisions and interactions -Atomic and molecular processes in external fields, including interactions with strong fields and short pulses -Matter waves and collective properties of cold atoms and molecules -Quantum optics, physics of lasers, nonlinear optics, and classical optics