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Quantum systems used for metrology can offer enhanced precision over their classical counterparts. The design of quantum sensors can be optimized by maximizing the quantum Fisher information (QFI), which characterizes the precision of…

量子物理 · 物理学 2025-08-26 George Mihailescu , Anthony Kiely , Andrew K. Mitchell

Understanding transcription factor dynamics is crucial for unraveling the regulatory mechanisms of gene expression that underpin cellular function and development. Measurements of transcription factor subcellular movements are essential for…

定量方法 · 定量生物学 2025-03-20 Sharva V. Hiremath , Etika Goyal , Gregory T. Reeves , Cranos M. Williams

Determining sensor parameters is a prerequisite for quantitative force measurement. Here we report a direct, high-precision calibration method for quartz tuning fork(TF) sensors that are popular in the feld of nanomechanical measurement. In…

材料科学 · 物理学 2025-06-27 Lifeng Hao , Qi Wang , Ping Peng , Zhenxing Cao , Weicheng Jiao , Fan Yang , Wenbo Liu , Rongguo Wang , Xiaodong He

Precise measurement of frequency sensitivity coefficients (FSCs) of some physical effects contributing to uncertainty is an important work in type-B uncertainty (u_B) evaluation of atomic frequency standards. We proposed a method based on…

量子物理 · 物理学 2019-09-11 Qian Wang , Ning Zhang , Rong Wei , Yuzhu Wang

The time-dependent optical properties of molecular systems are investigated by step-scan Fourier-transform spectroscopy in order to explore the dynamics at phase transitions and molecular orientation in the milli- and microsecond range. The…

材料科学 · 物理学 2016-07-20 Tobias Peterseim , Martin Dressel

We report a technique for experimental characterization of an $M$-mode quantum optical process, generalizing the single-mode coherent-state quantum-process tomography method [M. Lobino et al., Science 322, 563 (2008); A. Anis and A.I.…

量子物理 · 物理学 2015-05-01 Ilya A. Fedorov , Aleksey K. Fedorov , Yury V. Kurochkin , A. I. Lvovsky

Gravitational form factors (GFFs), defined through the matrix elements of the energy-momentum tensor, provide critical insights into the internal structure of nucleons and nuclei. In particular, their Fourier transforms -- evaluated in the…

核实验 · 物理学 2025-05-12 Zein-Eddine Meziani

As electronic computing approaches its performance limits, photonic accelerators have emerged as promising alternatives. Photonic accelerators exploiting semiconductor-laser synchronization have been studied for decision-making. While…

The quantum Fourier transform (QFT) has been implemented on a three bit nuclear magnetic resonance (NMR) quantum computer, providing a first step towards the realization of Shor's factoring and other quantum algorithms. Implementation of…

量子物理 · 物理学 2009-01-23 Yaakov S. Weinstein , Seth Lloyd , David G. Cory

We describe a method to probe the spectral fluctuations of a transition over broad ranges of frequencies and timescales with the high spectral resolution of Fourier spectroscopy, and a temporal resolution as high as the excited state…

光学 · 物理学 2009-03-13 Xavier Brokmann , Moungi Bawendi , Laurent Coolen , Jean-Pierre hermier

The light's image is the primary source of information carrier in nature. Indeed, a single photon's image possesses a vast information capacity that can be harnessed for quantum information processing. Our scheme for implementing quantum…

量子物理 · 物理学 2023-03-08 Mohammad Rezai , Jawad A. Salehi

Two strongly-pumped parametric interactions are simultaneously realized in a single nonlinear crystal in order to generate three strongly correlated optical fields. By combining together the outputs of two of the three detectors measuring…

Quantum frequency conversion (QFC), a critical technology in photonic quantum information science, requires that the quantum characteristics of the frequency-converted photon must be the same as the input photon except for the color. In…

量子物理 · 物理学 2021-02-24 Chin-Yao Cheng , Jia-Juan Lee , Zi-Yu Liu , Jiun-Shiuan Shiu , Yong-Fan Chen

The electromagnetic form factors provide important hints for the internal structure of the nucleon and continue to be of major interest for experimentalists. For an intermediate range of momentum transfers the form factors can be calculated…

The identification of phenomena able to pinpoint quantum interference is attracting large interest. Indeed, a generalization of the Hong-Ou-Mandel effect valid for any number of photons and optical modes would represent an important leap…

This is a contribution to the review 50 Years of Quantum Chromodynamics edited by F. Gross and E. Klempt, to be published in Journal EPJC. This contribution reviews the nucleon resonance transition form factors determined from meson…

高能物理 - 唯象学 · 物理学 2022-12-20 Volker D. Burkert

Quantum computers, currently in the noisy intermediate-scale quantum (NISQ) era, have started to provide scientists with a novel tool to explore quantum physics and chemistry. While several electronic systems have been extensively studied,…

量子物理 · 物理学 2026-03-26 Yi-Ting Lee , Vijaya Begum-Hudde , Barbara A. Jones , André Schleife

Quantum metrology, a cornerstone of quantum technologies, exploits entanglement and superposition to achieve higher precision than classical protocols in parameter estimation tasks. When combined with critical phenomena such as phase…

Quasi-forbidden electronic transitions in atoms and quasi-degenerate vibronic transitions in molecules serve as powerful probes of hypothetical temporal variations of fundamental constants. Computation of the sensitivity of a transition to…

化学物理 · 物理学 2025-11-17 Carsten Zülch , Konstantin Gaul , Robert Berger

Collective excitations in fermionic systems play a crucial role in determining their physical properties. An important challenge is to develop efficient theoretical approaches for describing these excitations and their coupling to fermionic…

强关联电子 · 物理学 2026-05-04 S. S. Onuchin , Ya. S. Lyakhova , L. D. Silakov , A. N. Rubtsov