Results 91 to 100 of about 7,483,920 (339)

Observation of a non-adiabatic geometric phase for elastic waves [PDF]

, 2012
We report the experimental observation of a geometric phase for elastic waves in a waveguide with helical shape. The setup reproduces the experiment by Tomita and Chiao [A. Tomita, R.Y. Chiao, Phys. Rev. Lett.
Agarwal, Aharonov, Anandan, Berry, Berry, Berry, Bhandari, Born, Hannay, Jérémie Boulanger, Nakahara, Nicolas Le Bihan, Pancharatnam, Rossetto, Rossetto, Samuel, Segert, Shapere, Stefan Catheline, Tomita, Treyssède, Vidale, Vincent Rossetto, von Bergmann, Zwanziger   +24 more
core   +5 more sources

Experimental observation of the geometric phase in nonlinear frequency conversion

Optica, 2019
The geometric phase is a common phenomenon in a variety of physical systems, with significant applications in optics. We report the first experimental demonstration of the adiabatic geometric phase in nonlinear frequency conversion, wherein the coupling ...
Aviv Karnieli, Sivan Trajtenberg‐Mills, G. D. Domenico, A. Arie   +3 more
semanticscholar   +1 more source

Structural and functional characterization of chitinase from carnivorous plant Drosera adelae

FEBS Open Bio, EarlyView.
A class I chitinase from the carnivorous plant Drosera adelae was expressed and purified using a yeast system, revealing high enzymatic activity. Structural analyses of the catalytic and chitin‐binding domains identified key tyrosine residues involved in substrate binding, offering insights into the enzyme's adaptation for insect digestion.
Kazunari Yoneda, Yuki Naruse, Yusaku Suizu, Tomohiro Araki, Yoshikazu Hoshi, Haruhiko Sakuraba, Junji Hayashi, Toshihisa Ohshima   +7 more
wiley   +1 more source

Noncyclic geometric phase and its non-Abelian generalization [PDF]

, 1999
We use the theory of dynamical invariants to yield a simple derivation of noncyclic analogues of the Abelian and non-Abelian geometric phases. This derivation relies only on the principle of gauge invariance and elucidates the existing definitions of the
Aitchison I J R, Ali Mostafazadeh, Avron J E, Berry M V, Born M, Christian J, de Polavieja G G, Kato T, Lewis H R Jr, Monteoliva D B, Morales D A, Mostafazadeh A, Mostafazadeh A, Mostafazadeh A, Nakahara M, Pati A K, Pressley A, Wu Y-S, Zak J   +18 more
core   +2 more sources

Central Dysmyelination in SSADH‐Deficient Humans and Mice

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives Succinic semialdehyde dehydrogenase deficiency (SSADHD) is an inherited metabolic disorder characterized by an accumulation of γ‐aminobutyric (GABA). In addition to its synaptic role as an inhibitory neurotransmitter, GABA also plays an important role in myelination.
Itay Tokatly Latzer, Henry H. C. Lee, Edward Yang, Cesar Alves, Mariarita Bertoldi, Caitlyn Fung, Spencer V. Steele, Eren Kule, Zijie Jin, Alexander Rotenberg, Jean‐Baptiste Roullet, Phillip L. Pearl   +11 more
wiley   +1 more source

Phase and Amplitude Modes in the Anisotropic Dicke Model with Matter Interactions

Entropy
Phase and amplitude modes, also called polariton modes, are emergent phenomena that manifest across diverse physical systems, from condensed matter and particle physics to quantum optics.
Ricardo Herrera Romero, Miguel Angel Bastarrachea-Magnani   +1 more
doaj   +1 more source

Nanostructured silica spin–orbit optics for modal vortex beam shaping

Nanophotonics, 2021
Modality is a generic concept of wave-optics at the basis of optical information and communications. One of the challenges of photonics technologies based on optical orbital angular momentum consists in the production of a modal content for both the ...
Coursault Delphine, Brasselet Etienne
doaj   +1 more source

Design of broadband terahertz vector and vortex beams: I. Review of materials and components

Light: Advanced Manufacturing, 2022
In this paper, we review the existing approaches for vortex and vector beam shaping and generation in the terahertz frequency range. The particular focus of this review is on the possibility of homogeneous topological charge formation in the ultra-wide ...
Nikolay V. Petrov, Bogdan Sokolenko, Maksim S. Kulya, Andrei Gorodetsky, Aleksey V. Chernykh   +4 more
doaj   +1 more source

The Quantum Geometric Phase between Orthogonal States

, 2004
We show that the geometric phase between any two states, including orthogonal states, can be computed and measured using the notion of projective measurement, and we show that a topological number can be extracted in the geometric phase change in an ...
A. Bohm, A. Shapere, Hon Man Wong, Kai Ming Cheng, M. Nakahara, M.-C. Chu, M. V. Berry, S. Pancharatnam   +7 more
core   +1 more source

Decoherence-induced geometric phase in a multilevel atomic system [PDF]

, 2006
We consider the STIRAP process in a three-level atom. Viewed as a closed system, no geometric phase is acquired. But in the presence of spontaneous emission and/or collisional relaxation we show numerically that a non-vanishing, purely real, geometric ...
Alicki R, Breuer H-P, Daniel A Lidar, Dattoli G, de Faria J G P, Gardiner C W, Gell-Mann M, Horn R A, Lidar D A, Messiah A, Shapere A, Shubhrangshu Dasgupta   +11 more
core   +2 more sources