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This paper presents a study of bifurcation in the time-averaged dynamics of TaO memristors driven by narrow pulses of alternating polarities. The analysis, based on a physics-inspired model, focuses on the stable fixed points and on how…

新兴技术 · 计算机科学 2023-10-03 Y. V. Pershin , V. A. Slipko

Memories are stored, at least partly, as patterns of strong synapses. Given molecular turnover, how can synapses maintain strong for the years that memories can persist? Some models postulate that biochemical bistability maintains strong…

神经元与认知 · 定量生物学 2015-04-09 Paul Smolen

We demonstrate for a nonlinear photonic system that two highly asymmetric feedback delays can induce a variety of emergent patterns which are highly robust during the system's global evolution. Explicitly, two-dimensional chimeras and…

We study how nonlinear delayed-feedback in the Ikeda model can induce solitary impulses, i.e. dissipative solitons. The states are clearly identified in a virtual space-time representation of the equations with delay, and we find that…

适应与自组织系统 · 物理学 2018-11-14 Vladimir V. Semenov , Yuri L. Maistrenko

Quantum memory is a central component for quantum information processing devices, and will be required to provide high-fidelity storage of arbitrary states, long storage times and small access latencies. Despite growing interest in applying…

The long-term lasing dynamics of Brillouin Fiber Lasers was recently shown to be governed by an intrinsic thermal feedback which stabilizes the lasing frequency at the lower half of the gain line. We show that this feedback can be utilized…

光学 · 物理学 2018-05-17 Omer Kotlicki , Jacob Scheuer

We investigate bistability and memory effects in a molecular junction weakly coupled to metallic leads with the latter being subject to an adiabatic periodic change of the bias voltage. The system is described by a simple Anderson-Holstein…

介观与纳米尺度物理 · 物理学 2012-09-20 Andrea Donarini , Abdullah Yar , Milena Grifoni

Optical response of an artificial composite nano-dimer comprising a semiconductor quantum dot and a metal nanosphere is analyzed theoretically. We show that internal degrees of freedom of the system can manifest bistability and optical…

材料科学 · 物理学 2011-07-27 A. V. Malyshev , V. A. Malyshev

We present the first report of the synchronization regimes in both unidirectionally and bidirectionally-coupled multiple time delay chaotic laser diodes subject to incoherent optical feedbacks and incoherent optical injection. We derive the…

混沌动力学 · 物理学 2009-04-29 E. M. Shahverdiev , K. A. Shore

We report on the experimental observation of period-doubling bifurcation of dissipative-soliton-resonance (DSR) pulses in a fiber laser passively mode-locked by using the nonlinear optical loop mirror. Increasing the pump power of the fiber…

A detailed experimental study of antiphase dynamics in a two-mode semiconductor laser with optical injection is presented. The device is a specially designed Fabry-Perot laser that supports two primary modes with a THz frequency spacing.…

光学 · 物理学 2009-11-13 S. Osborne , A. Amann , K. Buckley , G. Ryan , S. P. Hegarty , G. Huyet , S. O'Brien

A tunable optical multistability scheme based on a single cavity mode coupled with two separate atomic transitions in an atom-cavity system is proposed and demonstrated. Under the collective strong coupling condition, multiple polariton…

量子物理 · 物理学 2024-03-12 Liyong Wang , Yinxue Zhao , Jiajia Du

In this paper I demonstrate a novel design for an optoelectronic State Machine which replaces input/output forming logic found in conventional state machines with BDD based optical logic while still using solid state memory in the form of…

硬件体系结构 · 计算机科学 2016-09-19 Macauley Coggins

The control of light transmission through a Fabry-Perot cavity containing atoms is theoretically investigated, when the cavity mode beam and an intersecting control beam are both close to specific atomic resonances. A four-level atomic…

光学 · 物理学 2016-02-10 Rahul Sawant , S. A. Rangwala

We consider design optimization of passively mode-locked two-section semiconductor lasers that incorporate intracavity grating spectral filters. Our goal is to develop a method for finding the optimal wavelength location for the filter in…

光学 · 物理学 2015-06-19 Finbarr O'Callaghan , David Bitauld , Stephen O'Brien

Long Short-Term Memory (LSTM) infers the long term dependency through a cell state maintained by the input and the forget gate structures, which models a gate output as a value in [0,1] through a sigmoid function. However, due to the…

机器学习 · 计算机科学 2019-11-19 Kyungwoo Song , JoonHo Jang , Seung jae Shin , Il-Chul Moon

We demonstrate the first multimode fiber interference-based filtering in an all-fiber spatiotemporally mode-locked laser. The oscillator generates dissipative soliton pulses at 1036 nm with 12 mW average power, 6.24 ps duration and 24.3 MHz…

Two dynamical systems unidirectionally coupled in a sender-receiver configuration can synchronize with a nonzero phase-lag. In particular, the system can exhibit anticipated synchronization (AS), which is characterized by a negative…

神经元与认知 · 定量生物学 2020-09-30 Julio Nunes Machado , Fernanda Selingardi Matias

We demonstrate lasing into counter-propagating modes of a ring cavity using a gas of cold atoms as a gain medium. The laser operates under the usual conditions of magneto-optical trapping with no additional fields. We characterize the…

原子物理 · 物理学 2018-10-24 Balazs Megyeri , Graeme Harvie , Andreas Lampis , Jon Goldwin

We explore the effect of all-optical feedback on the steady state dynamics of optomechanical arrays arising from various topologies. First we consider an array comprised of a pair of independent optomechanical cavities coupled reversibly…

量子物理 · 物理学 2014-02-06 Chaitanya Joshi , Uzma Akram , G. J. Milburn