Article
Astronomy & Astrophysics
Caio C. Holanda Ribeiro, Vitorio A. De Lorenci
Summary: The velocity dispersions of a charged test particle due to modified vacuum fluctuations of quantum fields are divergent under idealized boundary conditions. When the mirror is modeled by a Drude-like susceptibility, these dispersions become regular, indicating that the assumption of idealized boundary conditions is the cause of the divergences. The implementation of a more realistic description reveals that the dispersion curves exhibit oscillatory behavior due to the effective mass of field modes inside the medium.
Article
Optics
Xinghong Zhu, Hongfei Wang, Dangyuan Lei, J. B. Pendry, Jensen Li
Summary: Exceptional points (EPs) are a useful tool in achieving sensitive optical properties based on non-Hermitian physics, such as in plasmonics for nano-sensing. By transforming a seed system with conventional parity-time symmetry, a series of non-Hermitian systems can be generated with exceptional points and phase transitions, providing an alternative approach for designing sensitive optical systems.
Article
Optics
Martino De Carlo, Francesco De Leonardis, Luciano Lamberti, Vittorio M. N. Passaro
Summary: In this study, a resonator-bus-resonator anti-parity-time-symmetric integrated optical gyroscope designed on the InP platform is proposed for the first time. This new architecture significantly reduces fabrication tolerance problems and enhances robustness against external perturbations. The proposed configuration also enables an electrical fine-tuning method to set the system at the exceptional point.
OPTICS AND LASERS IN ENGINEERING
(2022)
Article
Multidisciplinary Sciences
Geva Arwas, Sagie Gadasi, Igor Gershenzon, Asher Friesem, Nir Davidson, Oren Raz
Summary: Non-Hermitian Hamiltonians, such as parity-time (PT) and anti-PT symmetric Hamiltonians, have significant implications in various branches of physics. In this study, we investigate these novel symmetries theoretically and demonstrate them experimentally in coupled laser systems. We also discover a new relation between laser synchronization and the symmetry of the underlying non-Hermitian Hamiltonian.
Article
Physics, Multidisciplinary
Xin Yang, Jiawen Li, Yifei Ding, Mengwei Xu, Xue-Feng Zhu, Jie Zhu
Summary: The transient parity-time (PT) symmetry in electronics is demonstrated in this study. By equivalent circuit transformation according to the switching states of electronic systems, the PT symmetry is revealed. Using the phasor method and Laplace transformation, the hidden PT-symmetric Hamiltonian in the switching oscillation is derived, which is characterized by free oscillation modes. The spectral and dynamic properties of the PT electronic structure demonstrate the phase transition and eigenmode orthogonality. Importantly, the observed transient PT symmetry enables optimal switching oscillation suppression induced by exceptional points, showing the significance of PT symmetry in electronic systems with temporary responses. The study paves the way for breakthroughs in PT symmetry theory and has essential applications such as anti-interference in switch-mode electronics.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Multidisciplinary
Sebastian Franke, Juanjuan Ren, Marten Richter, Andreas Knorr, Stephen Hughes
Summary: This study demonstrates the breakdown of the photonic spontaneous emission (SE) formula in absorptive and amplifying media, and presents a corrected Fermi's golden rule and master equation for a quantum two-level system. The results show a net positive modification of the decay rate and the failure of commonly adopted formulas based solely on the local density of states.
PHYSICAL REVIEW LETTERS
(2021)
Article
Optics
Lu Xu, Long Wu, Xu Yang
Summary: The study investigates a layered planar superlens with parity-time (PT) symmetric potential, where adjusting the PT symmetric potential can improve super-resolution and increase working distance. The Eigenspectrum of plasmonic mode depends on PT potential, and the PT symmetry introduces robustness to experimental errors.
Article
Optics
Carlo Forestiere, Giovanni Miano
Summary: In this paper, the macroscopic electromagnetic response of a finite size dispersive dielectric object in unbounded space is studied using the Heisenberg picture and a Hopfield type scheme. The time evolution of the polarization density field and the electric field observable are expressed through integral operators, and the statistical functions of the observables are expressed through integral operators of the statistics of the initial conditions. The diagonalization of the Hamiltonian is achieved by expanding the polarization density field observable in terms of static longitudinal and transverse modes. Few static modes are needed to calculate each element of the impulse response matrix for dielectric objects of different sizes.
Article
Chemistry, Physical
Xia Cao, Jiaqing Zhu, Yang Jie, Ping Ma, Zhong Lin Wang
Summary: This paper studied the electromagnetic phenomena generated during collisions, finding that different types of collisions produce varying amounts of electrical energy, which directly affects the law of energy and momentum conservation.
Article
Physics, Multidisciplinary
A. S. Rodrigues, R. M. Ross, V. V. Konotop, A. Saxena, P. G. Kevrekidis
Summary: In this work, a nonlinear anti-PT-symmetric dimer is proposed and four families of solutions are found, with only one being spectrally and dynamically robust. The critical thresholds for the existence of these branches are analyzed and numerical computations confirm the results.
FRONTIERS IN PHYSICS
(2022)
Article
Multidisciplinary Sciences
Ning Wu, Kaiyu Cui, Qiancheng Xu, Xue Feng, Fang Liu, Wei Zhang, Yidong Huang
Summary: In this study, on-chip mechanical exceptional points (EPs) were demonstrated using a silicon optomechanical zipper cavity. By tailoring the dissipative and coherent couplings between two mechanical oscillators, the distinctive feature of EP, spectral splitting with 1/2 order response, was observed successfully.
Article
Multidisciplinary Sciences
Guoqiang Xu, Xue Zhou, Shuihua Yang, Jing Wu, Cheng-Wei Qiu
Summary: This study presents a method for generating quantized bulk quadrupole moments in fluid heat transport and observing quadrupole topological phases. The experimental results show that both the real- and imaginary-valued bands in thermal systems exhibit hierarchical features of bulk, gapped edge, and in-gap corner states.
NATURE COMMUNICATIONS
(2023)
Article
Optics
George W. Hanson, Frieder Lindel, Stefan Yoshi Buhmann
Summary: The comparison between the Langevin noise approach and normal-mode quantization for macroscopic electromagnetics in three-dimensional, inhomogeneous environments is discussed, with examples showing that the Langevin noise approach simplifies to the usual cavity mode expansion method in the absence of loss in closed systems.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2021)
Article
Physics, Multidisciplinary
Mauro Napsuciale
Summary: In this work, it is shown by a first principles calculation that quantum states describing massive relativistic free spinning particles obey certain kinematical conditions, which can be traced back to parity as a good quantum number. These conditions are fundamental to the equations of motion and the constraints satisfied by the corresponding fields. In the massless limit, a well-defined parity is lost but a symmetry related to arbitrary changes in the unphysical parity components emerges, and it is demonstrated that this emergent symmetry is the celebrated gauge symmetry.
Article
Physics, Multidisciplinary
Xi-Wang Luo, Chuanwei Zhang, Shengwang Du
Summary: This research establishes a quantum pseudo-anti-PT (pseudo-APT) symmetry which, when spontaneously broken, leads to the generation of an exceptional point that can be utilized for ultraprecision quantum sensing applications.
PHYSICAL REVIEW LETTERS
(2022)
Article
Multidisciplinary Sciences
Ido Kaminer, Yaniv Tenenbaum Katan, Hrvoje Buljan, Yichen Shen, Ognjen Ilic, Josue J. Lopez, Liang Jie Wong, John D. Joannopoulos, Marin Soljacic
NATURE COMMUNICATIONS
(2016)
Article
Nanoscience & Nanotechnology
Emma C. Regan, Yichen Shen, Josue J. Lopez, Chia Wei Hsu, Bo Zhen, John D. Joannopoulos, Marin Soljacic
Article
Multidisciplinary Sciences
Xiao Lin, Yi Yang, Nicholas Rivera, Josue J. Lopez, Yichen Shen, Ido Kaminer, Hongsheng Chen, Baile Zhang, John D. Joannopoulos, Marin Soljacic
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2017)
Article
Physics, Multidisciplinary
I. Kaminer, S. E. Kooi, R. Shiloh, B. Zhen, Y. Shen, J. J. Lopez, R. Remez, S. A. Skirlo, Y. Yang, J. D. Joannopoulos, A. Arie, M. Soljacic
Article
Chemistry, Multidisciplinary
Josue J. Lopez, Antonio Ambrosio, Siyuan Dai, Chuong Huynh, David C. Bell, Xiao Lin, Nicholas Rivera, Shengxi Huang, Qiong Ma, Soeren Eyhusen, Ido E. Kaminer, Kenji Watanabe, Takashi Taniguchi, Jing Kong, Dimitri N. Basov, Pablo Jarillo-Herrero, Marin Soljacic
Article
Nanoscience & Nanotechnology
Chao Qian, Xiao Lin, Yi Yang, Fei Gao, Yichen Shen, Josue Lopez, Ido Kaminer, Baile Zhang, Erping Li, Marin Soljacic, Hongsheng Chen
Article
Chemistry, Multidisciplinary
Victor W. Brar, Min Seok Jang, Michelle Sherrott, Josue J. Lopez, Harry A. Atwater
Article
Chemistry, Multidisciplinary
Victor W. Brar, Min Seok Jang, Michelle Sherrott, Seyoon Kim, Josue J. Lopez, Laura B. Kim, Mansoo Choi, Harry Atwater
Article
Materials Science, Multidisciplinary
Min Seok Jang, Victor W. Brar, Michelle C. Sherrott, Josue J. Lopez, Laura Kim, Seyoon Kim, Mansoo Choi, Harry A. Atwater
Proceedings Paper
Engineering, Electrical & Electronic
Samuel Kim, Jamison Sloan, Josue J. Lopez, Dave Kharas, Jeffrey Herd, Suraj Bramhavar, Paul Juodawlkis, George Barbastathis, Steven Johnson, Cheryl Sorace-Agaskar, Marin Soljacic
2019 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2019)
Proceedings Paper
Engineering, Electrical & Electronic
Xiao Lin, Yi Yang, Nicholas Rivera, Josue J. Lopez, Yichen Shen, Ido Kaminer, Hongsheng Chen, John D. Joannopoulos, Marin Soljacic
2017 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2017)
Proceedings Paper
Engineering, Electrical & Electronic
I. Kaminer, S. E. Kooi, R. Shiloh, B. Zhen, Y. Shen, J. J. Lopez, R. Remez, S. A. Skirlo, Y. Yang, J. D. Joannopoulos, A. Arie, M. Solijacic
2017 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2017)
Proceedings Paper
Engineering, Electrical & Electronic
Emma C. Regan, Yichen Shen, Josue J. Lopez, Chia Wei Hsu, Bo Zhen, John D. Joannopoulos, Marin Soljacic
2016 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2016)
Proceedings Paper
Engineering, Electrical & Electronic
Ido Kaminer, Yaniv Tenenbaum Katan, Hrvoje Buljan, Yichen Shen, Ognjen Ilic, Josue J. Lopez, Liang Jie Wong, John D. Joannopoulos, Marin Soljacic
2016 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2016)