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The dynamical encirclement around a second order exceptional point (EP) and corresponding chirality driven nonadiabatic modal dynamics have attracted enormous attention in the topological study of various non-Hermitian systems. However,…

光学 · 物理学 2020-04-08 Sibnath Dey , Arnab Laha , Somnath Ghosh

Optomechanical crystals, purposely designed and fabricated semiconductor nanostructures, are used to enhance the coupling between the electromagnetic field and the mechanical vibrations of matter at the nanoscale. However, in real…

We study a synchronization mechanism, based on one-way coupling of all-or-nothing type, applied to coupled map lattices with several different local rules. By analyzing the metric and the topological distance between the two systems, we…

统计力学 · 物理学 2007-05-23 Franco Bagnoli , Lucia Baroni , Paolo Palmerini

The optical cavity undergoes a quantum phase transition when the strength of a two-photon drive exceeds a critical point (CP), and the great sensitivity of CP in sensing has been recognized. However, these methodologies are customized to…

量子物理 · 物理学 2025-09-25 Shi-Yu Zeng , Chao-Qun Ai , Xi Cheng , Ming-Wei Yan , Xun-Wei Xu

Lasers designed to emit at multiple and controllable modes, or multi-wavelength lasers, have the potential to become key building blocks for future microwave photonic technologies. While many interesting schemes relying on optical injection…

光学 · 物理学 2022-09-05 Shahab Abdollahi , Pablo Marin-Palomo , Martin Virte

We consider $N$ oscillators coupled by a mean field as in the Winfree model. The model is governed by two parameters: the coupling strength $\kappa$ and the spectrum width $\gamma$ of the frequencies of each oscillator. In the uncoupled…

动力系统 · 数学 2016-07-18 W Oukil , A Kessi , Ph Thieullen

Advances in topological photonics and non-Hermitian optics have drastically changed our perception on how interdisciplinary concepts may empower unprecedented applications. Bridging the two areas could uncover the reciprocity between…

Stochastically driven nonlinear processes limit the number of amplified modes in a natural system due to competitive mode interaction, which is accompanied by loss of coherence when increasing the complexity of system. Specifically, we find…

光学 · 物理学 2016-07-21 Lei Gao , Tao Zhu , Stefan Wabnitz , Min Liu , Wei Huang

In this work, we explore the potential of spin-based integrated devices using polariton waveguides that form codirectional couplers. For suitable coupler parameters, a transfer of condensates between the arms of the coupler, occurs leading…

介观与纳米尺度物理 · 物理学 2024-08-05 Elena Rozas , Alexey Yulin , Sebastian Klembt , Sven Höfling , María Dolores Martín , Luis Viña

Time-multiplexed networks of degenerate optical parametric oscillators have demonstrated remarkable success in simulating coupled Ising spins, thus providing a promising route to solving complex combinatorial optimization problems. In these…

In this Letter we study theoretically the interaction of optical waves in nonlinear dynamical medium, i.e. medium with relaxation. Taking into account the relaxation of the photoinduced nonlinearity we derive a single evolution equation,…

光学 · 物理学 2018-10-17 Svitlana Bugaychuk , Elena Tobisch

In this work, we experimentally study the optical kerr nonlinearities of graphene/Si hybrid waveguides with enhanced self-phase modulation. In the case of CMOS compatible materials for nonlinear optical signal processing, Si and silicon…

应用物理 · 物理学 2019-03-27 Qi Feng , Hui Cong , Bin Zhang , Wenqi Wei , Yueyin Liang , Shaobo Fang , Ting Wang , Jianjun Zhang

We study the coupling between the fundamental guided modes of two identical parallel nanofibers analytically and numerically. We calculate the coefficients of directional coupling, butt coupling, and mode energy changes as functions of the…

光学 · 物理学 2020-12-14 Fam Le Kien , Lewis Ruks , Sile Nic Chormaic , Thomas Busch

Parity-time-symmetric ($\mathcal{PT}$-symmetric) optical waveguide couplers offer a great potential for future applications in integrated optics. Studies of nonlinear $\mathcal{PT}$-symmetric couplers present new possibilities for…

光学 · 物理学 2023-07-19 Wiktor Walasik , Chicheng Ma , Natalia M. Litchinitser

We study the effects of noise on the collective dynamics of an ensemble of coupled phase oscillators whose natural frequencies are all identical, but whose coupling strengths are not the same all over the ensemble. The intensity of noise…

适应与自组织系统 · 物理学 2015-05-13 Damian H. Zanette

We theoretically investigate the nonlinear effects in a hybrid quantum optomechanical system consisting of two optically coupled semiconductor microcavities containing a quantum dot and a Kerr nonlinear substrate.The steady state behavior…

介观与纳米尺度物理 · 物理学 2019-03-27 Sonam Mahajan , Aranya B Bhattacherjee

We investigate the spatiotemporal dynamics of coupled circle map lattices, evolving under synchronous (parallel) updating on one hand and asynchronous (random) updating rules on the other. Synchronous evolution of extended spatiotemporal…

混沌动力学 · 物理学 2007-05-23 Neelima Gupte , T. M. Janaki , Sudeshna Sinha

The conditions required for spontaneous parametric down-conversion in a waveguide with periodic nonlinearity in the presence of an unguided pump field are established. Control of the periodic nonlinearity and the physical properties of the…

Motivated by the recent success of end-to-end training of communications in the wireless domain, we strive to adapt the end-to-end-learning idea from the wireless case (i.e., linear) to coherent optical fiber links (i.e., nonlinear).…

信息论 · 计算机科学 2020-06-30 Tim Uhlemann , Sebastian Cammerer , Alexander Span , Sebastian Dörner , Stephan ten Brink

Cavity optomechanics implements a unique platform where moving objects can be probed by quantum fields, either laser light or microwave signals. With a pump tone driving at a frequency above the cavity resonance, self-sustained oscillations…

介观与纳米尺度物理 · 物理学 2024-10-17 A. Delattre , I. Golokolenov , R. Pedurand , X. Zhou , A. Fefferman , E. Collin
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