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Статті в журналах з теми "Localisation de photons":
Berkovits, R., and M. Kaveh. "Weak localisation of photons in a disordered two-dimensional medium." Journal of Physics C: Solid State Physics 20, no. 11 (April 20, 1987): L181—L185. http://dx.doi.org/10.1088/0022-3719/20/11/001.
Makshantsev, B. I., and V. B. Makshantsev. "Scattering of an ensemble of photons taking their space — time localisation into account." Quantum Electronics 31, no. 9 (September 30, 2001): 760–65. http://dx.doi.org/10.1070/qe2001v031n09abeh002040.
Burdyko, A., M. Caccia, A. Giaz, R. Santoro, and G. Tomaciello. "Design and commissioning of a Silicon Photomultiplier-based dosimeter for Low Dose Rate (LDR) oncological brachytherapy." Journal of Instrumentation 19, no. 03 (March 1, 2024): C03025. http://dx.doi.org/10.1088/1748-0221/19/03/c03025.
Jumpee, Chayanit, Chanakarn Onnomdee, Putthiporn Charoenphun, Phiphat Phruksarojanakun, and Krisanat Chuamsaamarkkee. "Radiation safety aspects of 90Y bremsstrahlung radiation produced from radiation shielding apparatus using the Monte Carlo simulation." Nuclear Technology and Radiation Protection 36, no. 3 (2021): 255–60. http://dx.doi.org/10.2298/ntrp2103255j.
Illand, Abigail, Pierre Jouchet, Emmanuel Fort, and Sandrine Lévêque-Fort. "Localisation nanométrique de molécules uniques par modulation du signal de fluorescence." Photoniques, no. 114 (2022): 30–35. http://dx.doi.org/10.1051/photon/202111430.
Skipetrov, Sergey. "Localisation d’Anderson de la lumière." Photoniques, no. 108 (May 2021): 24–27. http://dx.doi.org/10.1051/photon/202110824.
Grojo, David. "L’émergence de procédés d’écriture laser 3D dans les technologies silicium." Photoniques, no. 112 (2022): 37–42. http://dx.doi.org/10.1051/photon/202211237.
Pike, E. R., and S. Sarkar. "Photon localisation in parametric down-conversion." Quantum Optics: Journal of the European Optical Society Part B 1, no. 1 (September 1989): 61–73. http://dx.doi.org/10.1088/0954-8998/1/1/007.
See, Tian Feng. "Few-photon transport in strongly interacting light-matter systems: A scattering approach." International Journal of Quantum Information 17, no. 06 (September 2019): 1950050. http://dx.doi.org/10.1142/s0219749919500503.
Maćkiewicz, Jarosław J., and Olsza Borys. "First record of invasive slug Krynickillus melanocephalus Kaleniczenko, 1851 (Gastropoda: Eupulmonata: Agriolimacidae) in Poland." Folia Malacologica 31, no. 4 (December 11, 2023): 229–35. http://dx.doi.org/10.12657/folmal.031.024.
Дисертації з теми "Localisation de photons":
Mazal, Daniel Alejandro. "Radiothérapie stéréotaxique par petits faisceaux de rayons x de haute énergie : développement des moyens techniques et dosimétriques." Toulouse 3, 1990. http://www.theses.fr/1990TOU30069.
Juennard, Nicolas Jauffret Claude Xerri Bernard. "Détection et localisation de particules de très hautes énergies en acoustique sous-marine." [S. l.] : [s.n], 2007. http://tel.archives-ouvertes.fr/tel-00252061/fr.
Federico, Maxime. "Spatio-temporal description of single photons : from cavity production to local detection." Electronic Thesis or Diss., Bourgogne Franche-Comté, 2024. http://www.theses.fr/2024UBFCK013.
This work provides an analysis of spatio-temporal properties of single-photon states. Starting with a direct quantization in position space representation, we show that two different formulations are equivalent, i.e., they give the same quantum theory. The equivalence is formulated in terms of isomorphisms of their respective Hilbert space of states. We then use this construction in position space to study the propagation of photons in terms of pulses and we show that the dynamics of any state of the quantum electromagnetic field is given by the classical Maxwell equations for the classical pulse onto which the photons are defined. We also construct a model for local detection of photons using the energy density operator. This model allows us to show the nonlocality of all single-photon states using the anti-local property of the frequency operator Ω=c(-Δ)^{1/2}. We then characterize this nonlocal property for a single-photon state spontaneously emitted by a Hydrogen atom and we show a radial decay of its energy density of 1/r^6 in the asymptotic limit of large distances r from the atom. Finally, we consider the production of photons in cavities where we show through topological arguments that in the adiabatic limit, the rotating wave approximation is justified and thus the photons produced with these techniques can be very close to perfect single photons. We also construct as a preliminary result a heuristic model using quasinormal modes to describe the production of photons inside leaky cavities
Pichette, Julien. "Imagerie de fluorescence et intrinsèque de milieux diffusants par temps d’arrivée des premiers photons." Thèse, Université de Sherbrooke, 2014. http://savoirs.usherbrooke.ca/handle/11143/387.
Cajgfinger, Thomas. "Étude théorique et expérimentale du suivi de particules uniques en conditions extrêmes : imagerie aux photons uniques." Phd thesis, Université Claude Bernard - Lyon I, 2012. http://tel.archives-ouvertes.fr/tel-00770124.
Chef, Samuel. "Contribution à l'analyse de signaux acquis par émission de photons dynamique pour l'étude de circuits à très haute intégration." Thesis, Dijon, 2014. http://www.theses.fr/2014DIJOS032/document.
Scaling progresses has the benefit of making chips always more powerful. On the other hand, when there is a failure, the analysis of such advanced devices has became more sensitive. The defect localization step of this process is the critical one. Indeed, the aim is to find transistors which dimensions range in several nanometers on a device which surface is several square centimeters.Optical techniques like dynamical photon emission, also named Time Resolved Imaging (TRI), have proved to fit in such context. The later is based on the acquisition and exploitation of photons emitted by a switching CMOS structure. Due to its physical bacground, this tool has a limited invasive effect and can be used to analyze defect generating faults during a dynamical stimulation of the device. The complexity of the chips manufactured in advanced technologies has brought out some physical and technical limitations which can jeopardize analysis performed with this tool. To be more specific, signal over noise ratio can be quite low, so as the spatial resolution compared to the studied structures. In addition, complex circuits require long test sequences, generating huge quantities of photons to analyse. As a conclusion, all of these phenomenon forbid a simple manual procedure if ones expect to extract the emission signature of the defect in such data.The work reported in this thesis aims to develop new approaches of processing at the post-acquisition level, in order to solve or workaround the various aforementioned issues. It will enable the analyst to formulate an even better and more precise diagnosis.The task consists in extracting and synthesizing the information available in large amount of noisy signals. With that superpose in mind, two main approaches have been studied and developed. The first one establish a mapping of one parameter the electrical signals varying through time and space inside the acquisition area. It is based on a mixture of signal processing tools for 2D 1D signals. The second approaches uses data mining. More precisely, it combines clustering to statistical analyses of the resulting classes in order to find an emission event which is unexpected or having unusual properties, suggesting a candidate for failure. These two processes are complementary as they bring different information to the analyst
Crosnier, de Bellaistre Cécile. "Conductance et étalement d'une onde quantique dans un guide unidimensionnel : effet d'une force." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLO009/document.
A wave can be exponentially localized in a disordered medium, due to interference effects. This Anderson localization phenomenon leads to a cancellation of the conductance of a quantum fluid in 1D. However, theoretical works pointed out that an electric field may reduce or cancel this localization. We study here the effect of a force on the localization of a 1D quantum matter wave. Since both Anderson localization of an expanding wave packet and the effect of disorder on the transport between two reservoirs have been studied in ultracold atom experiments, we focus on two systems, namely the diffusion, or the transmission, of a particle.In order to calculate the transmission, we generalize a transfer matrix formalism to the presence of a, possibly inhomogeneous, force. The case of a speckle disorder as used in ultracold atom experiments is dealt with using two other analytical approaches. Our main is result is that the force can be entirely taken into account by renormalising the length with a local mean free path of the particle. For white-noise disorder, the force leads to a weaker, algebraic localization, whereas full delocalization appears for a correlated disorder. We then focus on the diffusion of a particle, using a numerical approach. A transition of delocalization of the particle for strong forces is shed into light through a power law increase of its position, whose exponent increases with the force. Moreover, we show that localization is systematically destroyed in a correlated disorder
Real, Elgueda Bastián Maximiliano. "Transport and driven-dissipative localization in exciton-polariton lattices." Electronic Thesis or Diss., Université de Lille (2022-....), 2022. http://www.theses.fr/2022ULILR025.
The simulation of lattice Hamiltonians in photonic platforms has been enlightening in the understanding of novel transport and localization properties in the context of solid-state physics. In particular, exciton-polaritons provide a versatile system to investigate these properties in lattices with intriguing band structures in the presence of gain and loss, and particle interactions. Polaritons are hybrid light-matter quasiparticles arising from the strong coupling between photons and excitons in semiconductor microcavities, whose properties can be directly accessed in photoluminescence experiments. In this thesis, we firstly study the features of strained honeycomb lattices made of coupled polariton resonators having high photonic content. In a critically strained lattice, we evidence both a semi-Dirac transport and an anisotropic localization of photons. Secondly, we show that a judicious driving in lattices of lossy resonators allows the appearance of novel localized modes. Using polariton lattices driven resonantly with several optical beams, we demonstrate the localization of light in at-will geometries down to a single site. Finally, we take advantage of the polarization-dependent polariton interaction to demonstrate an optical Zeeman-like effect in a single micropillar. In combination with optical spin-orbit coupling inherent to semiconductor microstructures, the interaction-induced Zeeman effect results in emission of vortex beams with a well-defined chirality. This thesis brings to light the power of polariton platforms to study lattice Hamiltonians with unprecedented properties and it also provides a first step towards the fully-optical generation of topological phases in lattices
Juennard, Nicolas. "Détection et localisation de particules de très hautes énergies en acoustique sous-marine." Phd thesis, Université du Sud Toulon Var, 2007. http://tel.archives-ouvertes.fr/tel-00295026.
Dans un second temps, plusieurs méthodes de détection sont étudiées, de la plus classique (étude du rapport de vraisemblance} à des méthodes plus récente (filtrage adapté, classification, etc.). La comparaison expérimentale en situation semi-réelle de celles-ci aboutit au choix de la méthode de détection suivante : le FASE (Filtrage Adapté Stochastique Etendu). Enfin, la position et la direction du neutrino sont estimés par un algorithme dérivé de Gauss-Newton, Cet estimateur se base sur la modélisation du déplacement du front d'onde acoustique et sur les informations temporelles de détection fournies par les hydrophones du télescope. De nombreuses configurations sont testées et les performances du système sont évaluées. Une structure d'hydrophone est proposée et une simulation dite « globale » finalisent cette thèse. Dans celle-ci, les étapes de détection et d'estimation sont basées sur les résultats obtenus précédemment. Les bruits de mer sont des bruits réels issus de campagnes de mesure et les résultats obtenus valident les travaux de cette thèse.
Raynaud, Christophe. "Spectroscopie d'absorption et d'émission des excitons dans les nanotubes de carbone." Thesis, Sorbonne Paris Cité, 2018. http://www.theses.fr/2018USPCC199/document.
The optical properties of carbon nanotubes are ideally described by the physicsof a one-dimensional object, giving rise in particular to the emergence of excitons todescribe the optical transitions of these objects. The optical experiments (emission,absorption) carried out on these objects at ambient temperature and on ensemblesconfirm the theoretical predictions based on the physics of 1D objects. But atcryogenic temperature and at the single emitter scale, the optical properties observedexperimentally are systematically different from those of a 1D object. One can citethe emergence of properties such as photon antibunching, which largely contributed tothe intensification of research on these objects for applications in quantum photonics.These properties are attributed to the localization of excitons along the nanotube axisin local potential wells (traps) created randomly by the interaction of nanotubes withtheir environment. The optical properties are then close to those of 0D objects, andare strongly modulated by the environment. The mechanisms and the origin of thelocalization and the physical knowledge of these traps are still very limited. This workshows on the one hand the development of an absorption setup on individual objectand the characterization of its sensitivity, and on the other hand the statistical studyof the emission of nanotubes at cryogenic temperature in a micro-photoluminescencesetup. The results obtained in the later setup by a super-resolution technique coupledwith hyper-spectral imaging show the characteristic quantities of potential wellswithin individual nanotubes. An experimental excitation-resolved photoluminescencesetup implemented during this work also showed a modification of the fundamentalexcitonic state by the environment, with the emergence of a spatial and spectraldiscretization of the delocalized ground state in a multitude of localized states
Книги з теми "Localisation de photons":
Tremblay, Roger. Collecte d'informations avec localisation automatisée pour les systêmes d'information géographique, projet no 3007. Québec, Qué: Service d'extension en foresterie de l'Est-du-Québec, 1995.
Québec, Ministère de L'agriculture des Pêcheries et de L'alimentation Direction de la Recherche Scientifique et Technique. Télédétection des Algues Marines des Côtes du Québec: 2 : Localisation et Essai D'évaluation de la Biomasse Par Photo-Interprétation. S.l: s.n, 1985.
Pavesi, Lorenzo, and Mher Ghulinyan. Light Localisation and Lasing: Random and Pseudo-Random Photonic Structures. Cambridge University Press, 2014.
Pavesi, Lorenzo, and Mher Ghulinyan. Light Localisation and Lasing: Random and Pseudo-Random Photonic Structures. Cambridge University Press, 2014.
Pavesi, Lorenzo, and Mher Ghulinyan. Light Localisation and Lasing: Random and Quasi-Random Photonic Structures. Cambridge University Press, 2014.
Частини книг з теми "Localisation de photons":
Wasley, Nicholas Andrew. "Disorder Limited Photon Propagation and Anderson Localisation in Photonic Crystal Waveguides." In Nano-photonics in III-V Semiconductors for Integrated Quantum Optical Circuits, 31–49. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-01514-9_3.
R.E. Hodgson, Daniel. "A Schrödinger Equation for Light." In Schrödinger Equation - Fundamentals Aspects and Potential Applications [Working Title]. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.112950.
Yu Tsipenyuk, Dmitry, and Wladimir B. Belayev. "Gravitational Waves, Fields, and Particles in the Frame of (1 + 4)D Extended Space Model." In Gravitational Waves - Theory and Observations [Working Title]. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.1000868.
Gu, Min. "Three-Dimensional Localisation of Fluorescence Resonance Energy Transfer in Living Cells under Two-Photon Excitation." In Multi-Modality Microscopy, 246–56. WORLD SCIENTIFIC, 2006. http://dx.doi.org/10.1142/9789812774620_0013.
Тези доповідей конференцій з теми "Localisation de photons":
Pike, E. R., and Sarben Sarkar. "Localisation Of Photon States In Quantum Optics." In 14th Congress of the International Commission for Optics, edited by Henri H. Arsenault. SPIE, 1987. http://dx.doi.org/10.1117/12.967178.
Kouskousis, Betty, Xiangping Li, Stefania Castelletto, and Min Gu. "Nanoscopic localisation and characterisation of nanoparticle embedded photonic materials." In 2011 International Quantum Electronics Conference (IQEC) and Conference on Lasers and Electro-Optics (CLEO) Pacific Rim. IEEE, 2011. http://dx.doi.org/10.1109/iqec-cleo.2011.6193701.
Andersson-Engels, S., I. Rokahr, and J. Carlsson. "Two-photon excited fluorescence microscopy using spectroscopic detection techniques." In The European Conference on Lasers and Electro-Optics. Washington, D.C.: Optica Publishing Group, 1994. http://dx.doi.org/10.1364/cleo_europe.1994.cmo5.
Asatryan, A. A., L. C. Botten, M. A. Byrne, V. D. Freilikher, S. A. Gredeskul, R. C. McPhedran, I. V. Shadrivov, and Y. S. Kivshar. "Anderson localisation of light in the presence of metamaterials." In Photonic Metamaterials: From Random to Periodic. Washington, D.C.: OSA, 2007. http://dx.doi.org/10.1364/meta.2007.tua3.
Stevens, Chris J., T. N. Thomas, S. Choudhary, John F. Ryan, Dragan Mihailovic, Laszlo Forro, Gunter A. Wagner, and J. E. Evetts. "Carrier relaxation and localisation in Bi2Sr2Ca1-yYyCu2O8 and YBa2Cu3O7-delta : a study by femtosecond time-resolved spectroscopy." In Photonics West '96, edited by Ivan Bozovic and Dirk van der Marel. SPIE, 1996. http://dx.doi.org/10.1117/12.241801.
Schena, Vincenzo, Guglielmo Lulli, Luca Zuccaro, and Vincenzo Ferrara. "Telecommunication Satellite Technical Solutions for Geo-localisation of Interfering Sources: An Innovative Approach." In 2019 PhotonIcs & Electromagnetics Research Symposium - Spring (PIERS-Spring). IEEE, 2019. http://dx.doi.org/10.1109/piers-spring46901.2019.9017670.
Steinbrink, J., H. Wabnitz та H. Rinneberg. "Localisation of absorption changes of layers in a turbid medium by photon time of flight measurements". У Biomedical Topical Meeting. Washington, D.C.: OSA, 1999. http://dx.doi.org/10.1364/bio.1999.amc2.
Mayou, Didier, Antoine Lacoix, Guy Trambly de Laissardière, and Jean-Pierre Julien. "Modelisation of disorder and localisation effect for electrons and holes in MAPI." In 3rd International Conference on Perovskite Thin Film Photovoltaics, Photonics and Optoelectronics. Valencia: Fundació Scito, 2017. http://dx.doi.org/10.29363/nanoge.abxpvperopto.2018.017.
Llorente, Roberto, Maria Morant, Nicolas Amiot, and Bernard Uguen. "Localisation of ultra-wide band radio signals by time-multiplexed photonic analog-to-digital processing." In 2010 36th European Conference and Exhibition on Optical Communication - (ECOC 2010). IEEE, 2010. http://dx.doi.org/10.1109/ecoc.2010.5621401.
Thomson, D., G. T. Reed, F. Y. Gardes, G. Z. Mashanovich, and S. Howe. "Introducing Carrier Localisation in Total Internal Reflection Optical Switches to Restrict Carrier Diffusion in the Guiding Layer." In 2006 3rd IEEE International Conference on Group IV Photonics. IEEE, 2006. http://dx.doi.org/10.1109/group4.2006.1708171.