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We describe a gyroscope that measures rotation based on the effects of the rotation on the polarization of light. Rotation induces a differential phase shift in the propagation of left- and right-circularly polarized light and this phase…

Despite the numerous advances, reinforcement learning remains away from widespread acceptance for autonomous controller design as compared to classical methods due to lack of ability to effectively tackle the reality gap. The reliance on…

Machine Learning · Computer Science 2024-09-23 Narendra Patwardhan , Zequn Wang

Cavity optomechanics enables active manipulation of mechanical resonators through backaction cooling and amplification. This ability to control mechanical motion with retarded optical forces has recently spurred a race towards realizing a…

Optics · Physics 2015-05-30 Mahmood Bagheri , Menno Poot , Mo Li , Wolfram P. H. Pernice , Hong X. Tang

We present a simple analysis of the design of a passive miniature resonant optical gyroscope. By combining the requirements on the angular random walk and the bias stability, we end up with simple expressions of the minimum diameter of the…

Applied Physics · Physics 2018-12-11 Gilles Feugnet , Alexia Ravaille , Sylvain Schwartz , Fabien Bretenaker

We present a scheme to strongly enhance the readout sensitivity of the squared displacement of a mobile scatterer placed in a Fabry-P\'erot cavity. We investigate the largely unexplored regime of cavity electrodynamics in which a highly…

Quantum Physics · Physics 2013-11-20 Claudiu Genes , André Xuereb , Guido Pupillo , Aurélien Dantan

This paper presents a novel approach for unsupervised video summarization using reinforcement learning (RL), addressing limitations like unstable adversarial training and reliance on heuristic-based reward functions. The method operates on…

Multimedia · Computer Science 2025-12-24 Mehryar Abbasi , Hadi Hadizadeh , Parvaneh Saeedi

We propose an all-optical approach to achieve optical nonreciprocity on a chip by quantum squeezing one of two coupled resonator modes. By parametric pumping a nonlinear resonator unidirectionally with a classical coherent field, we squeeze…

Quantum Physics · Physics 2022-02-25 Lei Tang , Jiangshan Tang , Mingyuan Chen , Franco Nori , Min Xiao , Keyu Xia

Vibrational resonance (VR) is a nonlinear phenomenon in which the system response to a weak signal can be resonantly enhanced by applying a high-frequency modulation signal with an appropriate amplitude. The majority of VR research has…

Optics · Physics 2024-03-01 Yinuo Wang , Shan Wu , Cuicui Li , Zhenglu Duan , Min Xie , Bixuan Fan

In this paper, we propose a control algorithm based on reinforcement learning, employing independent rewards for each joint to control excavators in a 3D space. The aim of this research is to address the challenges associated with achieving…

Robotics · Computer Science 2024-07-01 Yoonkyu Yoo , Donghwi Jung , Seong-Woo Kim

Phonon lasers or coherent amplifications of mechanical oscillations have provided powerful tools for both fundamental studies of coherent acoustics and diverse applications ranging from ultrasensitive force sensing to phononic information…

Optics · Physics 2023-12-13 Tian-Xiang Lu , Yan Wang , Keyu Xia , Xing Xiao , Le-Man Kuang , Hui Jing

Ultrasound (US) has been widely used in daily clinical practice for screening internal organs and guiding interventions. However, due to the acoustic shadow cast by the subcutaneous rib cage, the US examination for thoracic application is…

Robotics · Computer Science 2024-04-16 Yuan Bi , Cheng Qian , Zhicheng Zhang , Nassir Navab , Zhongliang Jiang

Nonreciprocal elements, such as isolators and circulators, play an important role in classical and quantum information processing. Recently, strong nonreciprocal effects have been experimentally demonstrated in cavity optomechanical…

Quantum Physics · Physics 2022-12-26 Zhen Chen , Qichun Liu , Jingwei Zhou , Peng Zhao , Haifeng Yu , Tiefu Li , Yulong Liu

On-chip optical nonreciprocal devices are vital components for integrated photonic systems and scalable quantum information processing. Nonlinear optical isolators and circulators have attracted considerable attention because of their…

Optics · Physics 2022-11-18 Rui-Kai Pan , Lei Tang , Keyu Xia , Franco Nori

We study the problem of nonepisodic reinforcement learning (RL) for nonlinear dynamical systems, where the system dynamics are unknown and the RL agent has to learn from a single trajectory, i.e., without resets. We propose Nonepisodic…

Machine Learning · Computer Science 2025-02-12 Bhavya Sukhija , Lenart Treven , Florian Dörfler , Stelian Coros , Andreas Krause

We propose a new scheme for ultra-sensitive laser gyroscopes that utilizes the physics of exceptional points. By exploiting the properties of such non-Hermitian degeneracies, we show that the rotation-induced frequency splitting becomes…

Motion planning under uncertainty is one of the main challenges in developing autonomous driving vehicles. In this work, we focus on the uncertainty in sensing and perception, resulted from a limited field of view, occlusions, and sensing…

Robotics · Computer Science 2021-10-05 Kasra Rezaee , Peyman Yadmellat , Simon Chamorro

The utilization of teleoperation is a crucial aspect of the construction industry, as it enables operators to control machines safely from a distance. However, remote operation of these machines at a joint level using individual joysticks…

Robotics · Computer Science 2023-06-26 Hyung Joo Lee , Sigrid Brell-Cokcan

Articulated object manipulation is a challenging task, requiring constrained motion and adaptive control to handle the unknown dynamics of the manipulated objects. While reinforcement learning (RL) has been widely employed to tackle various…

Robotics · Computer Science 2024-12-12 Yujin Kim , Sol Choi , Bum-Jae You , Keunwoo Jang , Yisoo Lee

This thesis focuses on the mathematical description and application of nonlinear cavity optomechanical systems. The first part is concerned with solving the dynamics of the standard nonlinear optomechanical Hamiltonian with an additional…

Quantum Physics · Physics 2020-03-27 Sofia Qvarfort

Optical systems combining balanced loss and gain profiles provide a unique platform to implement classical analogues of quantum systems described by non-Hermitian parity-time- (PT-) symmetric Hamiltonians and to originate new synthetic…