Zobrazeno 1 - 10
of 54
pro vyhledávání: '"Gupta, Samit Kumar"'
Autor:
Wang, Hong-Fei, Gupta, Samit Kumar, Zhu, Xue-Yi, Lu, Ming-Hui, Liu, Xiao-Ping, Chen, Yan-Feng
Publikováno v:
Phys. Rev. B 98, 214101 (2018)
Bound states in the continuum (BICs) in photonic crystals represent the unique solutions of wave equations possessing an infinite quality-factor. We design a type of bilayer photonic crystal and study the influence of symmetry and coupling between TE
Externí odkaz:
http://arxiv.org/abs/1906.06102
Autor:
Zhou, Xingping, Gupta, Samit Kumar, Huang, Zhong, Yan, Zhendong, Zhan, Peng, Chen, Zhuo, Lu, Minghui, Wang, Zhenlin
Publikováno v:
Applied Physics Letters 113, 101108 (2018)
Exceptional points (EPs) are degeneracies in open wave systems with coalescence of at least two energy levels and their corresponding eigenstates. In higher dimensions, more complex EP physics not found in two-state systems is observed. We consider t
Externí odkaz:
http://arxiv.org/abs/1808.08768
Autor:
Ge, Hao, Ni, Xu, Tian, Yuan, Gupta, Samit Kumar, Lu, Ming-Hui, Lin, Xin, Huang, Wei-Dong, Chan, C. T., Chen, Yan-Feng
Publikováno v:
Phys. Rev. Applied 10, 014017 (2018)
Weyl points emerge as topological monopoles of Berry flux in the three-dimensional (3D) momentum space and have been extensively studied in topological semimetals. As the underlying topological principles apply to any type of waves under periodic bou
Externí odkaz:
http://arxiv.org/abs/1803.00828
Autor:
Gupta, Samit Kumar, Zou, Yi, Zhu, Xue-Yi, Lu, Ming-Hui, Zhang, Lijian, Liu, Xiao-Ping, Chen, Yan-Feng
Publikováno v:
Advanced Materials 32 (27), 1903639 (2020)
The explorations of the quantum-inspired symmetries in optical and photonic systems have witnessed immense research interests both fundamentally and technologically in a wide range of subjects of physics and engineering. One of the principal emerging
Externí odkaz:
http://arxiv.org/abs/1803.00794
Autor:
Zhu, Xue-Yi, Gupta, Samit Kumar, Sun, Xiao-Chen, He, Cheng, Li, Gui-Xin, Jiang, Jian-Hua, Lu, Ming-Hui, Liu, Xiao-Ping, Chen, Yan-Feng
Two-dimensional (2D) coupled resonant optical waveguide (CROW), exhibiting topological edge states, provides an efficient platform for designing integrated topological photonic devices. In this paper, we propose an experimentally feasible design of 2
Externí odkaz:
http://arxiv.org/abs/1801.10289
Autor:
Gupta, Samit Kumar
Publikováno v:
Optics Communications 411, 1-7 (2018)
In this work, based on the recently proposed (Phys. Rev. Lett. 110 (2013) 064105) continuous nonlocal nonlinear Schr\"odinger system with parity-time symmetric Kerr nonlinearity (PTNLSE), a numerical investigation has been carried out for two first o
Externí odkaz:
http://arxiv.org/abs/1710.08624
Autor:
Gupta, Samit Kumar
Electrochemical detection of protein binding at physiological salt concentration by planar field effect transistor (FET) platforms has yet to be documented convincingly. In fact, use of immunologically modified FET sensors (immunoFETs) for in vivo de
Externí odkaz:
http://rave.ohiolink.edu/etdc/view?acc_num=osu1290575121
Publikováno v:
Commun. Nonlinear Sci. Numer. Simulat. 36, 141 (2016)
In this work, we have studied the peregrine rogue wave dynamics, with a solitons on finite background (SFB) ansatz, in the recently proposed (Phys. Rev. Lett. 110 (2013) 064105) continuous nonlinear Schrodinger system with parity-time symmetric Kerr
Externí odkaz:
http://arxiv.org/abs/1507.02816
Publikováno v:
Nonlinear Dynamics 87, 1121 (2017)
We show the possibility of controlling the dynamical behavior of a single fiber ring (SFR) resonator system with the fiber being an amplified (gain) channel and the ring being attenuated (loss) nonlinear dielectric medium. Our model is based on the s
Externí odkaz:
http://arxiv.org/abs/1501.05187
Nonlinear Parity-Time (PT) symmetric closed-form optical quadrimer waveguides: Attractor perspective
Publikováno v:
The European Physical Journal D Vol. 69, p. 199 (2015)
We report a study on a closed-form nonlinear parity-time symmetric optical quadrimer waveguides system with a specific coupling scheme. The system yields power saturation behavior in the modes, which may be attributed to the inherent attractor in the
Externí odkaz:
http://arxiv.org/abs/1410.6258