Results 41 to 50 of about 21,873 (288)

Gravitational Redshift Tests with Atomic Clocks and Atom Interferometers

PRX Quantum, 2021
Atomic interference experiments can probe the gravitational redshift via the internal energy splitting of atoms and thus give direct access to test the universality of the coupling between matter-energy and gravity at different spacetime points.
Fabio Di Pumpo, Christian Ufrecht, Alexander Friedrich, Enno Giese, Wolfgang P. Schleich, William G. Unruh   +5 more
doaj   +1 more source

Sensitivity Enhanced Magnetic Field Sensor Based on Hollow Core Fiber Fabry-Perot Interferometer and Vernier Effect

IEEE Photonics Journal, 2022
A simple to fabricate, low cost, and high Sensitivity magnetic sensor is proposed in this paper. The sensor is composed of two parallel Fabry-Perot (FP) interferometers which are fabricated by fusing single mode fiber and hollow core fiber.
Jian Xu, Kui Huang, Jingjing Zheng, Jing Li, Li Pei, Haidong You, Tigang Ning   +6 more
doaj   +1 more source

A quantum scattering interferometer [PDF]

Nature, 2007
The collision of two ultra-cold atoms results in a quantum-mechanical superposition of two outcomes: each atom continues without scattering and each atom scatters as a spherically outgoing wave with an s-wave phase shift. The magnitude of the s-wave phase shift depends very sensitively on the interaction between the atoms.
Hart, Russell A., Xu, Xinye, Legere, Ronald, Gibble, Kurt   +3 more
openaire   +3 more sources

Phase sensitivity of spatially broadband high-gain SU(1,1) interferometers

Physical Review Research, 2023
Nonlinear interferometers are promising tools for quantum metrology, as they are characterized by an improved phase sensitivity scaling compared to linear interferometers operating with classical light.
D. Scharwald, T. Meier, P. R. Sharapova
doaj   +1 more source

Integrated optical sensor system for beverage analysis

, 1998
Integrated optical transducers for the detection of chemical and biochemical species and for optical measurements on bulk media are the subject of intense research effort. While many such sensors have been demonstrated in research laboratories worldwide,
Luff, B.J., K. Kawaguchi, B. J. Luff, James S. Wilkinson, Kawaguchi, K., Wilkinson, J.S.   +5 more
core   +1 more source

Optoelectronic Synaptic Devices Using Molecular Telluride Phase‐Change Inks for Three‐Factor Learning

Advanced Functional Materials, EarlyView.
Optoelectronic synaptic devices based on solution‐processed molecular telluride GST‐225 phase‐change inks are demonstrated for three‐factor learning. A global optical signal broadcast through a silicon waveguide induces non‐volatile conductance updates exclusively in locally electrically flagged memristors.
Kevin Portner, Dhananjeya Kumaar, Giacomo Torti, Killian Keller, Till Zellweger, Florian M. Schenk, Christoph Weilenmann, Daniel Chelladurai, Vara Prasad Jonnalagadda, Ghazi Sarwat Syed, Vanessa Wood, Jürg Leuthold, Alexandros Emboras, Maksym Yarema, Mathieu Luisier   +14 more
wiley   +1 more source

Strong Lead‐Free Bioinspired Piezoceramics for Durable Energy Transducers

Advanced Functional Materials, EarlyView.
We fabricated brick‐and‐mortar lead‐free piezoceramics with Bi0.5Na0.5TiO3 monocrystal platelets as bricks and amorphous silica as mortar. The alignment of the bricks and the presence of the amorphous silica led to anisotropic residual stresses. These residual stresses increase the samples toughness, strength and durability while the brick alignment ...
Ruxue Yang, Temesgen Tadeyos Zate, Peiren Wang, Soumyajit Mojumder, Elo Overgaard Mogensen, Oriol Gavalda‐Diaz, Zihe Li, Shitong Zhou, Ajeet Kumar, James Roscow, Hamideh Khanbareh, Astri Bjørnetun Haugen, Florian Bouville   +12 more
wiley   +1 more source

Emerging Post‐CMOS Hardware Neurons for Brain‐Inspired Computing: Devices, Circuits, and System Integration

Advanced Functional Materials, EarlyView.
The physical realization of artificial neurons is a critical challenge for energy‐efficient neuromorphic computing. This review presents a comprehensive analysis of the evolution of artificial neuron implementations from conventional CMOS to emerging post‐CMOS technologies.
Kannan Udaya Mohanan, Hocheon Yoo, Benoît H. Lessard, Ioannis Kymissis, Chang‐Hyun Kim   +4 more
wiley   +1 more source

Dual Interferometric Interrogation for DFB Laser-Based Acoustic Sensing

Sensors
Acoustic sensing has many applications in engineering, one of which is fiber-optic hydrophones (FOHs). Conventional piezoelectric hydrophones face limitations related to size, electromagnetic interference, corrosion, and narrow operating bandwidth. Fiber-
Mehmet Ziya Keskin, Abdulkadir Yentur, Ibrahim Ozdur   +2 more
doaj   +1 more source

Improving the phase super-sensitivity of squeezing-assisted interferometers by squeeze factor unbalancing

New Journal of Physics, 2017
The sensitivity properties of an SU(1,1) interferometer made of two cascaded parametric amplifiers, as well as of an ordinary SU(2) interferometer preceded by a squeezer and followed by an anti-squeezer, are theoretically investigated.
Mathieu Manceau, Farid Khalili, Maria Chekhova   +2 more
doaj   +1 more source