Добірка наукової літератури з теми "Noise induced coherence"
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Статті в журналах з теми "Noise induced coherence"
Cao, Chun Yan, Shui Dong Xiong, Zheng Liang Hu, and Yong Ming Hu. "Suppression of Double Rayleigh Scattering Induced Coherent Noise in a Remote Fiber Sensor System Using PGC Technique." Advanced Materials Research 571 (September 2012): 185–89. http://dx.doi.org/10.4028/www.scientific.net/amr.571.185.
Повний текст джерелаLIM, WOOCHANG, and SANG-YOON KIM. "COUPLING-INDUCED SPIKING COHERENCE IN COUPLED SUBTHRESHOLD NEURONS." International Journal of Modern Physics B 23, no. 09 (April 10, 2009): 2149–57. http://dx.doi.org/10.1142/s0217979209052431.
Повний текст джерелаSHERSTNEV, V. V., A. KRIER, A. G. BALANOV, N. B. JANSON, A. N. SILCHENKO, and P. V. E. McCLINTOCK. "MID-INFRARED LASING INDUCED BY NOISE." Fluctuation and Noise Letters 03, no. 01 (March 2003): L91—L95. http://dx.doi.org/10.1142/s0219477503001129.
Повний текст джерелаLIM, WOOCHANG, and SANG-YOON KIM. "STOCHASTIC SPIKING COHERENCE IN COUPLED SUBTHRESHOLD MORRIS-LECAR NEURONS." International Journal of Modern Physics B 23, no. 05 (February 20, 2009): 703–10. http://dx.doi.org/10.1142/s0217979209049991.
Повний текст джерелаDodin, Amro, and Paul Brumer. "Noise-induced coherence in molecular processes." Journal of Physics B: Atomic, Molecular and Optical Physics 54, no. 22 (November 17, 2021): 223001. http://dx.doi.org/10.1088/1361-6455/ac3e77.
Повний текст джерелаWu, Kaijun, Huan Zheng, and Tao Li. "Coherence Resonance Behavior of FitzHugh-Nagumo Neurons Induced by Electromagnetic Field Driven by Phase Noise." Discrete Dynamics in Nature and Society 2022 (January 27, 2022): 1–18. http://dx.doi.org/10.1155/2022/8384444.
Повний текст джерелаRappel, Wouter-Jan, and Alain Karma. "Noise-Induced Coherence in Neural Networks." Physical Review Letters 77, no. 15 (October 7, 1996): 3256–59. http://dx.doi.org/10.1103/physrevlett.77.3256.
Повний текст джерелаCarter, Jerry A., Noel Barstow, Paul W. Pomeroy, Eric P. Chael, and Patrick J. Leahy. "High-frequency seismic noise as a function of depth." Bulletin of the Seismological Society of America 81, no. 4 (August 1, 1991): 1101–14. http://dx.doi.org/10.1785/bssa0810041101.
Повний текст джерелаXie, Huijuan, and Yubing Gong. "Temporal Coherence Transitions Induced by Channel Noise in Scale-Free Neuronal Networks with Time Delay." Fluctuation and Noise Letters 16, no. 04 (November 21, 2017): 1750031. http://dx.doi.org/10.1142/s0219477517500316.
Повний текст джерелаGinzburg, Saul L., and Mark A. Pustovoit. "Bursting Dynamics of a Model Neuron Induced by Intrinsic Channel Noise." Fluctuation and Noise Letters 03, no. 03 (September 2003): L265—L274. http://dx.doi.org/10.1142/s0219477503001361.
Повний текст джерелаДисертації з теми "Noise induced coherence"
Anderloni, Sebastiano. "Noisy effects in ultracold atomic gases." Doctoral thesis, Università degli studi di Trieste, 2009. http://hdl.handle.net/10077/3062.
Повний текст джерелаThe experimental realization of Bose Einstein Condensates opened the path for a wide range of investigations in physics of ultracold atoms; the peculiar characteristics of these systems and the recent advances in optical confinement technology make them preferred candidates for the implementation of quantum communication and information protocols based on many-body coherent states. In this framework, the dissertation focuses on some consequences that the presence of a weakly coupled external environment has on a system of cold atoms in an optical trap. Typically, the presence of an environment leads to noise and dissipation; whereas the thesis investigates the capability of the environment of mediating an induced interaction between otherwise isolated atoms, making possible the rising of coherence between atoms localized in different sites of the confining potential. The effects of this coherence can be interpreted in terms of an atomic current flowing across the system. Standard open quantum systems methods, mainly related to the weak coupling limit, have been used in order to describe the dissipative dynamics by means of a memoryless master equation. Except for some special cases, this master equation cannot be analitically integrated; therefore, suitable techniques have been used to describe the coherence behaviour at small times, which are of the order of the characteristic times of the dissipative phenomena in the thesis. In detail, the weak coupling limit has been reviewed in the general formalism of open quantum systems; then, after a brief introduction about the physycs of ultracold atoms, the master equation ruling the dissipative dynamics in the presence of a weakly coupled environment, typically a heat bath or a stochastic classical field, has been derived. Two different kinds of coupling have been considered, mainly differing in the conservation of the total number of particles. Having obtained the master equation, which depends on typical phenomenological parameters relative to the environment, the cases in which a dissipative induced current arises as a consequence of the coupling with the environment, have been examined. The effects of this current have been shown to be, in principle, experimentally accessible by looking at absorption images of the freely expanding atomic cloud once the trapping potential has been switched off. From these images it is possible to extract a spatial density profile after the free expansion; the presence of interference fringes in this density profile denotes the presence of coherence in the trapped system. This experimental procedure has been described in the general framework of the quantum measurement theory: from actual experimental evidence, it has been shown that a consistent use of the wave packet reduction principle leads to theoretical predictions for the expected density profile, which are slightly different from the ones commonly used in the literature. These differences have been briefly discussed both theoretically and for their possible experimental relevance.
La realizzazione sperimentale di condensati di Bose-Einstein ha inaugurato un ampio settore di studi nell'ambito della fisica dei gas di atomi ultrafreddi anche dal punto di vista teorico; le loro particolari caratteristiche, unite allo sviluppo delle tecnologie di confinamento di molti atomi in reticoli ottici, ne fanno degli ottimi candidati per l'applicazione di alcuni protocolli di comunicazione ed informazione quantistica basati sulla costruzione di stati coerenti a molti corpi. Il lavoro di tesi parte da questo contesto e si concentra su alcune conseguenze della presenza di un ambiente esterno in interazione con un sistema di atomi freddi confinati in potenziali ottici. Tipicamente, la presenza di un ambiente da' luogo ad effetti di rumore e dissipazione; la tesi studia invece la possibilita' che esso medi un'interazione tra atomi altrimenti isolati, rendendo in alcuni casi possibile la generazione di coerenza tra atomi localizzati nei siti costituenti il potenziale confinante, coerenza che si manifesta in maniera sperimentalmente rilevabile per mezzo di una corrente di materia. Le tecniche utilizzate si rifanno alla teoria dei sistemi quantistici aperti, ed in particolare al limite di accoppiamento debole, grazie al quale e' possibile descrivere la dinamica dissipativa tramite un'equazione master priva di effetti di memoria. Tranne che in casi molto particolari, non e' possibile integrare analiticamente l'equazione master; sono percio' state utilizzate delle tecniche in grado di rivelare il comportamento della coerenza per tempi sufficientemente brevi, quali quelli tipici dei fenomeni dissipativi studiati in questa tesi. In dettaglio, nella tesi e' stata introdotta dapprima la teoria del limite di accoppiamento debole nell'opportuno formalismo dei sistemi quantistici aperti; quindi, dopo una breve introduzione della fisica degli atomi freddi confinati in potenziali ottici, e' stata ricavata l'equazione master che ne determina l'evoluzione dissipativa quando questi sono debolmente accoppiati ad un ambiente esterno, tipicamente un bagno termico oppure un campo stocastico classico. Sono stati considerati due possibili esempi di accoppiamento, i quali differiscono tra loro per la conservazione e non del numero totale di atomi. Una volta ricavata l'equazione master, caratterizzata da specifici parametri fenomenologici relativi all'ambiente, sono stati studiati i casi in cui a questi corrisponde una corrente quantistica tra i siti del potenziale ottico confinante. Gli effetti di tale corrente sono stati dimostrati essere in linea di principio sperimentalmente accessibili tramite immagini di assorbimento ottenute illuminando le nuvole atomiche liberate dal confinamento.Da queste si ottengono misure di densita' spaziale che evidenziano, tramite frange di interferenza, l'eventuale presenza di coerenza di fase. Queste procedure sperimentali sono state descritte per mezzo della teoria quantistica della misura: in base alle evidenze sperimentali finora acquisite, e' stato mostrato che un utilizzo consistente delle tecniche relative alla riduzione del pacchetto d'onda porta ad una predizione teorica per il profilo di densita' spaziale formalmente diversa da quella comunemente utilizzata in letteratura. Questa differenza e' stata brevemente discussa sia per quanto riguarda il suo aspetto teorico che per la sua possibile rilevanza sperimentale.
XXI Ciclo
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Mousa, Pasandi Mohammad. "Adaptive decision-directed channel equalization and laser phase noise induced inter-carrier-inteference mitigation for coherent optical orthogonal frequency division multiplexing transport systems." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=114464.
Повний текст джерелаLa croissance explosive du trafic globale sur Internet a crée une pression importante sur les réseaux optiques et les systèmes de transmission optiques; ce qui suggère le besoin de liens de transmission de haute capacité ainsi que de réseaux adaptables, reconfigurables et flexible. Les récents progrès dans les technologies de semiconducteurs métal-oxyde com-plémentaire (CMOS) ont facilité l'usage des traitements de signaux numériques (DSP) dans les systèmes de transmission optique. Grâce au retour en force du système de transmission optique cohérent ces dernières années, les systèmes de transmission optique régis par logiciel et supportés par les traitements de signaux numériques ont mené la transition fondamentale des réseaux optique inflexible vers des réseaux optique robuste, reconfigurable, prêt à brancher et utiliser.Depuis peu, le format de modulation par multiplexage fréquentiel orthogonale en optique cohérente (CO-OFDM) est profondément étudier comme format de modulation particu-lièrement prometteur pour réaliser des systèmes de transmission cohérents. Malgré le fait que les CO-OFDM aient réussi à susciter un grand intérêt dans la communauté de recherche, ils leur restent encore à avoir un impact plus tangible dans le secteur commercial. Ce non-déploiement commercial est attribué aux difficultés d'implémentations, notamment à l'information superflue excessive nécessaire et à la susceptibilité accrue aux nonlinéarités de la fibre optique et aux bruits de fréquence et de phase.Cette thèse explore certaines idées de DSP pour des systèmes de transmission CO-OFDM, incluant deux contributions originales. La première étant un égalisateur de canaux à adaptation dirigée par décision (ADDCE) qui vise à réduire l'information superflue nécessaire aux systèmes de transmission CO-OFDM. ADDCE récupère une estimation de la valeur du bruit de phase après un stage initiale de décision en extrayant et en moyennant la dérive de phase de tout les sous-canaux OFDM, ce qui démontre une compensation du bruit de phase sans information superflue. De plus, cela ajourne la matrice de transfère du canal optique symbole par symbole, offrant une réduction de l'information excédante associés avec les symboles pilotes. La seconde contribution de cette thèse se concentre sur la mitiga-tion de l'interférence inter-canaux (ICI) induite par le bruit de phase du laser dans les systèmes CO-OFDM. Ce compensateur de ICI basé sur l'interpolation estime le bruit de phase des échantillons dans le temps en utilisant une interpolation linéaire entre les estimations d'erreur de phase commune (CPE) de symboles OFDM consécutifs. Les performances des algorithmes d'égalisations appliqués en DSP mentionnés ci-haut sont étudiées en simulations et expérimentalement dans un système de transmission en CO-OFDM sur double polarisation à intervalle de garde réduite (RGI-DP-CO-OFDM), ce qui démontre une performance supérieure vis-à-vis de l'égalisateur conventionnel (CEs). Plus encore, l'analyse de la complexité des algorithmes d'égalisateurs proposées sera fournit; confirmant une implémentation à faible complexité.
森, 正和. "反射戻り光が動的単一モード半導体レーザのモード分配特性に及ぼす影響の研究". 1993. http://hdl.handle.net/2237/12987.
Повний текст джерелаЧастини книг з теми "Noise induced coherence"
Freund, Jan A., Alexander Neiman, and Lutz Schimansky-Geier. "Stochastic resonance and noise-induced phase coherence." In Stochastic Climate Models, 309–23. Basel: Birkhäuser Basel, 2001. http://dx.doi.org/10.1007/978-3-0348-8287-3_14.
Повний текст джерелаBorchgrevink, H. M. "Concept — Reference Coherence in Speech Perception: Consequences for Native and Second Language Speech Comprehension in Noise." In Basic and Applied Aspects of Noise-Induced Hearing Loss, 357–67. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4684-5176-4_26.
Повний текст джерелаJia, Yanbing, and Huaguang Gu. "Phase Noise-Induced Transition from Single Coherence Resonance to Double Coherence Resonances in a Neuronal Model." In Advances in Cognitive Neurodynamics (V), 867–72. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-0207-6_117.
Повний текст джерелаGong, Shichao, Bo Peng, Daijun Chen, Yongqiang Tang, and Pengfei Wang. "Diagnosis of Road-Induced Drumming Noise of Passenger Car Based on Multiple Coherence Method." In Lecture Notes in Electrical Engineering, 737–48. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-9718-9_57.
Повний текст джерелаMullins, J. M., T. A. Litovitz, and C. J. Montrose. "The Role of Coherence in Electromagnetic Field-Induced Bioeffects: The Signal-to-Noise Dilemma." In Electromagnetic Fields, 319–38. Washington, DC: American Chemical Society, 1995. http://dx.doi.org/10.1021/ba-1995-0250.ch018.
Повний текст джерелаLeBerre, Martine, Elisabeth Ressayre, and Andrée Tallet. "Delayed Feedback Acting as Noise to Induce Phase Transitions." In Coherence and Quantum Optics VI, 653–57. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4613-0847-8_120.
Повний текст джерелаO'Callaghan, Casey. "Processes." In A Multisensory Philosophy of Perception, 19–52. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198833703.003.0002.
Повний текст джерелаТези доповідей конференцій з теми "Noise induced coherence"
Saurabh, Aditya, Lipika Kabiraj, Richard Steinert, and Christian Oliver Paschereit. "Noise-Induced Dynamics in the Subthreshold Region in Thermoacoustic Systems." In ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/gt2016-57442.
Повний текст джерелаLuo, Zeju, and Lihong Song. "Coherence Resonance in Noise-Induced Excitable Systems." In 2008 Fourth International Conference on Natural Computation. IEEE, 2008. http://dx.doi.org/10.1109/icnc.2008.922.
Повний текст джерелаNikoghosyan, Gor, Michael Fleischhauer, Matthew D. Eisaman, and Mikhail D. Lukin. "Quantum Noise of Single-Photon Sources Based on Electromagnetically Induced Transparency." In Conference on Coherence and Quantum Optics. Washington, D.C.: OSA, 2007. http://dx.doi.org/10.1364/cqo.2007.cmi24.
Повний текст джерелаMeucci, R. "Evidence of Noise Induced Synchronization and Coherence Resonance in Homoclinic Chaos." In EXPERIMENTAL CHAOS: 7th Experimental Chaos Conference. AIP, 2003. http://dx.doi.org/10.1063/1.1612198.
Повний текст джерелаHui, Guohua. "Noise-Induced Double Coherence Resonance in Leaky Integrate-and-Fire Neuron Array." In 2010 4th International Conference on Bioinformatics and Biomedical Engineering (iCBBE 2010). IEEE, 2010. http://dx.doi.org/10.1109/icbbe.2010.5515503.
Повний текст джерелаLi, Hua, Jun Ye, and John G. McInerney. "Influence of noise on deterministic chaos in a coherence-collapsed semiconductor laser." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1991. http://dx.doi.org/10.1364/oam.1991.fe5.
Повний текст джерелаEl-Samad, Hana, and Mustafa Khammash. "Coherence Resonance: A Mechanism for Noise Induced Stable Oscillations in Gene Regulatory Networks." In Proceedings of the 45th IEEE Conference on Decision and Control. IEEE, 2006. http://dx.doi.org/10.1109/cdc.2006.377181.
Повний текст джерелаSmithey, D. T., M. Belsley, K. Wedding, and M. G. Raymer. "Near quantum-limited phase memory in an optical amplifier." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1991. http://dx.doi.org/10.1364/oam.1991.thr3.
Повний текст джерелаPrivman, Vladimir, and Dmitry Solenov. "Coherence and entanglement in two-qubit dynamics: interplay of the induced exchange interaction and quantum noise due to thermal bosonic environment." In Defense and Security Symposium, edited by Eric J. Donkor, Andrew R. Pirich, and Howard E. Brandt. SPIE, 2007. http://dx.doi.org/10.1117/12.717685.
Повний текст джерелаHamakawa, Hiromitsu, Yuji Kouno, and Eiichi Nishida. "Effect of Fins on Vortex Shedding Noise Generated From a Circular Cylinder in Cross Flow." In ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2010. http://dx.doi.org/10.1115/fedsm-icnmm2010-30290.
Повний текст джерела