2025年1月18日 · Quantum metrology uses quanta — individual packets of energy — for setting the standards that define units of measurement and for other high-precision research. Quantum mechanics sets the...

2011年3月31日 · Quantum metrology is the use of quantum techniques such as entanglement to yield higher statistical precision than purely classical approaches. In this Review, we analyse some of the...

2006年1月3日 · We point out a general framework that encompasses most cases in which quantum effects enable an increase in precision when estimating a parameter (quantum metrology). The typical quantum precision enhancement is of the order of the square root of the number of times the system is sampled.

2024年5月16日 · Quantum sensing and metrology use coherent superposition states of quantum systems to detect and measure physical effects of interest.

2023年5月8日 · What is Quantum Metrology & what are its Benefits? To improve the sensitivity and accuracy of measurements, quantum metrology takes advantage of the peculiar properties of quantum systems, such as entanglement and superposition.

This book presents the theory of quantum effects used in metrology and results of the author’s own research in the field of quantum electronics, and discusses quantum measurement standards used in many branches of metrology, such as those …

2025年2月5日 · Here we study randomized measurements as a new approach for multi-parameter quantum metrology. We show quantum measurements on single copies of quantum states given by 3-design perform near-optimally when estimating an arbitrary number of parameters in pure states and more generally, approximately low-rank states, whose …

2024年12月24日 · Our results establish the optimal use for metrology of arbitrarily non-Gaussian quantum correlations in a large variety of many-body systems. We introduce a new paradigm for the preparation of deeply entangled states useful for quantum metrology.

3 天之前 · The paper provides a full understanding on the maximal achievable quantum Fisher information (QFI) in quantum sensing protocols, with continuous time dynamics in the presence of Markovian noise, assuming arbitrary quantum controls. It provides simple algebraic conditions on the character of short time and long time scalings of the QFI (quadratic or linear) as well as …

2024年9月18日 · Quantum metrology is the science of using quantum mechanical phenomena to make high-precision measurements. It is central to fields like timekeeping, navigation, and fundamental physics, where accuracy is essential.