Parity-time (PT) symmetry and associated non-Hermitian properties in open physical systems have been intensively studied in search of new interaction schemes and their applications. Here, we experimentally demonstrate an electrical circuit producing key non-Hermitian properties and unusual wave dynamics grounded on anti-PT (APT) symmetry. Using a resistively coupled amplifying-LRC-resonator circuit, we realize a generic APT-symmetric system that enables comprehensive spectral and time-domain analyses on essential consequences of the APT symmetry. We observe an APT-symmetric exceptional point (EP), inverse PT-symmetry breaking transition, and counterintuitive energy-difference conserving dynamics in stark contrast to the standard Hermitian dynamics keeping the system's total energy constant. Therefore, we experimentally confirm unique properties of APT-symmetric systems, and further development in other areas of physics may provide new wave-manipulation techniques and innovative device-operation principles.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5988699 | PMC |
| http://dx.doi.org/10.1038/s41467-018-04690-y | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Two-dimensional non-Hermitian skin effect in an ultracold Fermi gas.
Nature
January 2025
Department of Physics, The Hong Kong University of Science and Technology, Kowloon, Hong Kong, China.
The concept of non-Hermiticity has expanded the understanding of band topology, leading to the emergence of counter-intuitive phenomena. An example is the non-Hermitian skin effect (NHSE), which involves the concentration of eigenstates at the boundary. However, despite the potential insights that can be gained from high-dimensional non-Hermitian quantum systems in areas such as curved space, high-order topological phases and black holes, the realization of this effect in high dimensions remains unexplored.
View Article and Find Full Text PDFCrossing exceptional points in non-Hermitian quantum systems.
Sci Adv
January 2025
Institute of Physics, University of Rostock, Rostock, Germany.
Exceptional points facilitate peculiar dynamics in non-Hermitian systems. Yet, in photonics, they have mainly been studied in the classical realm. In this work, we reveal the behavior of two-photon quantum states in non-Hermitian systems across the exceptional point.
View Article and Find Full Text PDFCharacterization and Fluctuations of an Ivermectin Binding Site at the Lipid Raft Interface of the N-Terminal Domain (NTD) of the Spike Protein of SARS-CoV-2 Variants.
Viruses
November 2024
Department of Biology, Faculty of Medicine, Aix-Marseille University, INSERM UA16, 13015 Marseille, France.
Most studies on the docking of ivermectin on the spike protein of SARS-CoV-2 concern the receptor binding domain (RBD) and, more precisely, the RBD interface recognized by the ACE2 receptor. The N-terminal domain (NTD), which controls the initial attachment of the virus to lipid raft gangliosides, has not received the attention it deserves. In this study, we combined molecular modeling and physicochemical approaches to analyze the mode of interaction of ivermectin with the interface of the NTD-facing lipid rafts of the host cell membrane.
View Article and Find Full Text PDFMultimode Miniature Polarization-Sensitive Metamaterial Absorber with Ultra-Wide Bandwidth in the K Band.
Micromachines (Basel)
November 2024
College of Electronic Information Engineering, Changchun University of Science and Technology, Changchun 130022, China.
Metamaterial absorbers have gained widespread applications in fields such as sensing, imaging, and electromagnetic cloaking due to their unique absorption characteristics. This paper presents the design and fabrication of a novel K-band polarization-sensitive metamaterial absorber, which operates in the frequency range of 20.76 to 24.
View Article and Find Full Text PDFUnravelling the potential of a hybrid borocarbonitride biphenylene 2D network for thermoelectric applications: a first principles study.
Nanoscale
January 2025
Department of Physics, Indian Institute of Technology Patna, Bihta, Bihar, 801106, India.
In this study, we investigate a novel hybrid borocarbonitride (bpn-BCN) 2D material inspired by recent advances in carbon biphenylene synthesis, using first-principles calculations and semi-classical Boltzmann transport theory. Our analysis confirms the structural stability of bpn-BCN through formation energy, elastic coefficients, phonon dispersion, and molecular dynamics simulations at 300 K and 800 K. The material exhibits an indirect band gap of 0.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!