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Three recent results on weak measurements are presented. They are: i) repeated measurements on a single copy can not provide any information on it and further, that in the limit of very large such measurements, weak measurements have…

量子物理 · 物理学 2015-09-17 N. D. Hari Dass

Weak measurement is a new technique which allows one to describe the evolution of postselected quantum systems. It appears to be useful for resolving a variety of thorny quantum paradoxes, particularly when used to study properties of pairs…

量子物理 · 物理学 2009-11-10 K. J. Resch , A. M. Steinberg

Interpretations of an experiment on the back-action in a weak measurement in [M. Iinuma et al., New J. Phys. vol.13 (2011), 033041] are revisited. We show two different but essentially equivalent interpretations for this experiment along…

量子物理 · 物理学 2013-10-30 Kouji Nakamura , Masataka Iinuma

I provide additional arguments for refuting Vaidmans weak value analysis of the path of a particle in a nested Mach-Zehnder interferometer. The argument uses sequential weak values to supplement my previous analysis according to which even…

量子物理 · 物理学 2018-06-13 B. E. Y. Svensson

Weak values of the spin operator Sz of massive particles, more precisely neutrons, have been experimentally determined by applying a novel measurement scheme. This is achieved by coupling the neutron's spin weakly to its spatial degree of…

Measurements are crucial in quantum mechanics, in fundamental research as well as in applicative fields like quantum metrology, quantum-enhanced measurements and other quantum technologies. In the recent years, weak-interaction-based…

Bartkiewicz et al. [Phys. Rev. A 91, 012103 (2015)] provided an alternative analysis of experiment performed by Danan et al. [Phys. Rev. Lett. 111, 240402 (2013)] which presented surprising evidence regarding the past of photons passing…

量子物理 · 物理学 2016-04-20 Lev Vaidman

In above mentioned article [1] assumptions of possible systematic errors of our experiment on measuring of the neutron lifetime [2] have been made. In the given comment we are obliged to explain, that assumptions made in [1] are erroneous.…

核实验 · 物理学 2010-01-20 A. Serebrov , A. Fomin , V. Varlamov

A neutron optical experiment is presented to investigate the paths taken by neutrons in a three-beam interferometer. In various beam-paths of the interferometer, the energy of the neutrons is partially shifted so that the faint traces are…

Direct detection experiments for dark matter are increasingly ruling out large parameter spaces. However, light dark matter models with particle masses $<$ GeV are still largely unconstrained. Here we examine a proposal to use atom…

高能物理 - 唯象学 · 物理学 2024-09-09 Yufeng Du , Clara Murgui , Kris Pardo , Yikun Wang , Kathryn M. Zurek

We study the case of multi-component dark matter, in particular how direct detection signals are modified in the presence of several stable weakly-interacting-massive particles. Assuming a positive signal in a future direct detection…

高能物理 - 唯象学 · 物理学 2017-11-29 Juan Herrero-Garcia , Andre Scaffidi , Martin White , Anthony G. Williams

Recent observations of neutron-star properties, in particular the recent detection of gravitational waves emitted from binary neutron stars, GW 170817, open the way to put strong constraints on nuclear interactions. In this paper, we review…

核理论 · 物理学 2019-09-25 S. Gandolfi , J. Lippuner , A. W. Steiner , I. Tews , X. Du , M. Al-Mamun

For precise measurements with polarized neutrons high efficient spin-manipulation is required. We developed several neutron optical elements suitable for a new sophisticated setup, i.e., DC spin-turners and Larmor-accelerators which…

量子物理 · 物理学 2014-08-19 Hermann Geppert , Tobias Denkmayr , Stephan Sponar , Hartmut Lemmel , Yuji Hasegawa

Weak measurements have an increasing number of applications in contemporary quantum mechanics. They were originally described as a weak interaction that slightly entangled the translational degrees of freedom of a particle to its spin,…

The nuclear matter equation of state is relatively well constrained at sub-saturation densities thanks to the knowledge from nuclear physics. However, studying its behavior at supra-saturation densities is a challenging task. Fortunately,…

核理论 · 物理学 2023-02-17 Hoa Dinh Thi , Chiranjib Mondal , Francesca Gulminelli

I review the available empirical information on the equation of state of cold strongly interacting matter, as well as the prospects for obtaining new insights from the experimental study of gravitational waves emitted by neutron stars.

核理论 · 物理学 2017-08-23 Omar Benhar

Weak measurement is unique in enabling measurements of non-commuting operators as well as otherwise-undetectable peculiar phenomena predicted by the Two-State-Vector-Formalism (TSVF). This article, the first in two parts, explores novel…

量子物理 · 物理学 2015-06-23 Yakir Aharonov , Eliahu Cohen , Avshalom C. Elitzur

The use of weak measurements for performing quantum tomography is enjoying increased attention due to several recent proposals. The advertised merits of using weak measurements in this context are varied, but are generally represented by…

量子物理 · 物理学 2016-01-06 Jonathan A. Gross , Ninnat Dangniam , Christopher Ferrie , Carlton M. Caves

We point out three apparent inconsistencies in the treatment of oscillation coherence from reactor neutrino and source neutrino experiments in recent paper "Damping of neutrino oscillations, decoherence and the lengths of neutrino wave…

高能物理 - 唯象学 · 物理学 2022-09-02 B. J. P. Jones

Dark matter detectors built primarily to probe elastic scattering of WIMPs on nuclei are also precise probes of light, weakly coupled particles that may be absorbed by the detector material. In this paper, we derive constraints on the…

高能物理 - 唯象学 · 物理学 2015-07-23 Haipeng An , Maxim Pospelov , Josef Pradler , Adam Ritz