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科学通报:英文版 2023年第18期68卷 2017-2024,M0003页

作者： Antonina A.Arkhipova Yiqi Zhang Yaroslav V.Kartashov Sergei A.Zhuravitskii nikolay n.skryabin.Ivan V.Dyakonov Alexander A.Kalinkin Sergei P.Kulik Victor O.Kompanets Sergey V.Chekalin Victor n.Zadkov Institute of Spectroscopy Russian Academy of SciencesTroitsk 108840Russia Faculty of Physics Higher School of EconomicsMoscow 105066Russia Key Laboratory for Physical Electronics and Devices(Ministry of Education) School of Electronic Science and EngineeringXi’an Jiaotong UniversityXi’an 710049China Quantum Technology Centre Faculty of PhysicsM.V.Lomonosov Moscow State UniversityMoscow 119991Russia

时间参数周期变化的弗洛凯系统有助于发现常参数静态系统中不存在并常常伴有新颖拓扑态出现的非传统拓扑相.耦合系数被周期调制的Su-Schrieffer-Heeger晶格正是这种弗洛凯系统之一.尽管这个晶格在一半演化周期内处在拓扑非平庸相,在另... 详细信息

时间参数周期变化的弗洛凯系统有助于发现常参数静态系统中不存在并常常伴有新颖拓扑态出现的非传统拓扑相.耦合系数被周期调制的Su-Schrieffer-Heeger晶格正是这种弗洛凯系统之一.尽管这个晶格在一半演化周期内处在拓扑非平庸相,在另一半周期内处于拓扑平庸相,它的边界上仍然支持源于拓扑的反常π模.本文通过在透明非线性光学材料中刻蚀出周期振荡的Su-Schrieffer-Heeger波导阵列,分别实验观测到了一维系统中位于边界和二维系统中位于角落的光学反常π模.同时,在弗洛凯频谱的禁带中,作者还证实了在高功率情况下一类分化自光学反常π模的新拓扑π孤子.本文报道的π孤子是强振荡的非线性弗洛凯态,它们的波形在每经过一个纵向周期后都可以精确地复现.不论是在一维还是在二维振荡波导阵列中,这类π孤子都是动态稳定的,它们的局域特性都由其功率决定.二维的结果还表明作者实现了弗洛凯光学高阶拓扑绝缘体.

关键词： Floquet topological insulators p states Edge solitons SSH model

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Spatiotemporal continuum generation in polariton waveguides

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Light(Science & Applications) 2019年第1期8卷 1117-1127页

作者： Paul M.Walker Charles E.Whittaker Dmitry V.skryabin Emiliano Cancellieri Ben Royall Maksym Sich Ian Farrer David A.Ritchie Maurice S.Skolnick Dmitry n.Krizhanovskii Department of Physics and Astronomy University of SheffieldSheffield S37RHUK Department of Physics University of BathBath BA27AYUK ITMO University Kronverksky Avenue 49St.Petersburg 197101Russia Department of Physics Lancaster UniversityLancaster LA14YBUK Department of Electronic and Electrical Engineering University of SheffieldSheffield S37HQUK Cavendish Laboratory University of CambridgeCambridge CB30HEUK

We demonstrate the generation of a spatiotemporal optical continuum in a highly nonlinear exciton–polariton waveguide using extremely low excitation powers(2-ps,100-W peak power pulses)and a submillimeter device suitable for integrated optics *** observe contributions from several mechanisms over a range of powers and demonstrate that the strong light–matter coupling significantly modifies the physics involved in all of *** experimental data are well understood in combination with theoretical *** results are applicable to a wide range of systems with linear coupling between nonlinear oscillators and particularly to emerging polariton devices that incorporate materials,such as gallium nitride and transition metal dichalcogenide monolayers that exhibit large light–matter coupling at room *** open the door to low-power experimental studies of spatiotemporal nonlinear optics in submillimeter waveguide devices.

关键词： millimeter waveguide optics

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Observation of nonlinear disclination states

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Light(Science & Applications) 2023年第9期12卷 1818-1829页

作者： Boquan Ren Antonina A.Arkhipova Yiqi Zhang Yaroslav V.Kartashov Hongguang Wang Sergei A.Zhuravitskii nikolay n.skryabin.Ivan V.Dyakonov Alexander A.Kalinkin Sergei P.Kulik Victor O.Kompanets Sergey V.Chekalin Victor n.Zadkov Key Laboratory for Physical Electronics and Devices Ministry of EducationSchool of Electronic Science and EngineeringXi’an Jiaotong UniversityXi’an 710049China Institute of Spectroscopy Russian Academy of SciencesTroitskMoscow 108840Russia Faculty of Physics Higher School of EconomicsMoscow 105066Russia Quantum Technology Centre Faculty of PhysicsM.V.Lomonosov Moscow State UniversityMoscow 119991Russia

Introduction of controllable deformations into periodic materials that lead to disclinations in their structure opens novel routes for construction of higher-order topological insulators hosting topological states at *** of these topological states is consistent with the bulk-disclination correspondence principle,and is due to the filling anomaly that results in fractional charges to the boundary unit *** far,topological disclination states were observed only in the linear regime,while the interplay between nonlinearity and topology in the systems with disclinations has been never studied *** report here on the experimental observation of the nonlinear photonic disclination states in waveguide arrays with pentagonal or heptagonal disclination cores inscribed in transparent optical medium using the fs-laser writing *** transition between nontopological and topological phases in such structures is controlled by the Kekulédistortion coefficient r with topological phase hosting simultaneously disclination states at the inner disclination core and spatially separated from them corner-I,corner-II,and extended edge states at the outer edge of the *** show that the robust nonlinear disclination states bifurcate from their linear counterparts and that location of their propagation constants in the gap and,hence,their spatial localization can be controlled by their *** disclination states can be efficiently excited by Gaussian input beams,but only if they are focused into the waveguides belonging to the disclination core,where such topological states *** results open new prospects for investigation of nonlinear effects in topological systems with disclinations and are relevant for different areas of science,including Bose-Einstein and polariton condensates,where potentials with the disclinations can be created.

关键词： structure topological nonlinear

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Repellent effect of synanthropic house mouse urine odor on small forest mammals

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Current Zoology 2023年第3期69卷 315-323页

作者： Igor A.Zhigarev Vasiliy V.Alpatov Dmitry A.Shitikov maria V.nekrasova Olga G.Alekseeva Elena V.Kotenkova Department of Zoology and Ecology Institute of Biology and ChemistryMoscow Pedagogical State University129164 Kibalchicha Str.6/3MoscowRussia Laboratory for Behaviour and Behavioural Ecology of Mammals A.N.Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences119071 Leninsky prospect33MoscowRussia Department of Zoology Ecology and Nature ConservationK.I.Skryabin Moscow State Academy of Veterinary Medicine and Biotechnology109472 Skrvabin Str.23MoscowRussia

In this study,we examined the effect of synanthropic house mouse(Mus musculus)urine odor on catching probability of small mammals to live *** conducted a series of field experiments in August 2016 and 2017 in a natural forests of the northwestern Moscow Region(Russia).Small mammals were trapped at two 4-ha fields using capture-mark-recapture technique by setting 200 live traps(100 points,2 traps per point)within each *** trap in each pair was odorless(control)with bait only,whereas the other one was odor-baited with 20μL of the urine of a synanthropic house *** analysis was based on the data collected from 2 rodent species(bank vole Myodes glareolus,herb field mouse Apodemus uralensis)and 3 shrew species(common shrew Sorex araneus,Laxmann’s shrew Sorex caecutiens,and Eurasian pygmy shrew Sorex minutus).As a result,only bank voles significantly avoided odor-baited live *** generalized linear mixed models,we showed that the choice of a trap by bank voles depended on their age,whereas the probability of repeated capture to a certain live trap was related to their prior *** discuss the possible role of components of synanthropic house mouse urine in the population management of exoanthropic small mammals.

关键词： field experiment Mus musculus olfactory cues repellent response to traps small mammals

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