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The authors employ topolectric circuits to realize a non-Hermitian topological Hopf bundle state of matter, which allows them to observe the emergence of phases that are unique to non-Hermitian systems. The proposed non-Hermitian Hopf bundle platform and visualization methodology pave the way for designing new topologically robust non-Hermitian phases of matter.
A wide range of topological phases have generated interest, notably within the context of magnetic semimetals, where specific symmetries tied to magnetic orders ensure the preservation of distinct topological states. By introducing staggered rotations, the authors show a route to manipulate vector chirality, facilitating a topological phase transition and tunable anomalous Hall conductivity in the noncollinear chiral antiferromagnet Mn3Sn.
Quantum communication networks are expected to exceed the performance of communications systems based on classical physics in terms of security and communication efficiency and contribute towards the formation of quantum internet. Here, the authors present a model of complex quantum communication networks based on quantum Ising spins where entangled clusters serve as efficient communication channels.
The ever-expanding field of gravitational wave science calls for controlled laboratory experiments on dynamic gravitation to provide insights and more precise measurements of gravity. The authors propose, model, and experimentally realize a system using two rotating bars as transmitter and a bending beam resonator as detector, finding that the near field gravitational energy transfer that creates detector amplitudes of up to 100 nm/s is 10 to the power of 25 times higher than what would be expected from gravitational waves emitted from an equivalent quadrupole gravitational wave generator.
Adiabatic quantum annealers offer a promising path to establish an edge over classical computation, even though the demonstration of an advantage is still open. In this paper, the authors employ Quantum RBMs on Adiabatic quantum annealers, finding orders-of-magnitude speed-up compared to classical computers on real-world cybersecurity tasks for negative phase sampling.
Quantum circuits are constructed from various superconducting components such as qubits and quantum logic gates and each come with their own challenges in terms of efficient operation. Here, the authors investigate the effects of magnetic field penetration on superconducting coplanar waveguide resonators and suggest ways to improve their magnetic resilience.
A recurring theme in physics has been the discovery of distinctive phases of matter. Here, the authors propose a general recipe for constructing projective mirror symmetry and report an experimental realization of mirror Chern insulators in spinless systems.
The valley Hall effect offers an additional degree of freedom in 2D materials than can have implications for optoelectronic-based applications but measuring and controlling the effect is challenging. Here, the authors offer an approach to measure the valley Hall response using strain to induce variations in the particle density from which information on the Hall conductivity can be taken.
Mode-pairing quantum key distribution (MP-QKD) is a potential protocol. Here the authors analyze the finite-key effect for the MPQKD protocol with rigorous security proof against general attacks. And they propose a six-state MP-QKD protocol and analyze its finite key effect.
The time correlation between primary electrons and the secondary particles in electron microscopies encloses information of the whole interaction and excitation dynamics. The authors introduce time-correlated electron and photon counting microscopy that acts as a universal analysis approach for photon generation processes and arbitrary emitters.
Human travel is one of the factors contributing to epidemic spreading. By studying the impact of non-Markovian travel on epidemic dynamics, the authors find that the epidemic threshold can be maximized by a proper travel level and exhibits a two-threshold phenomenon, which provides insight into understanding and controlling real epidemics.
Chirality plays a key role in non-trivial topological systems and can be used to engineer a range of exotic physical phenomena. Here, the authors investigate hidden chiral domain wall states and their topological properties in a double-chain Su-Schrieffer-Heeger model and elucidate a series of single and double gap phases that occur by varying the dimerization and interchain coupling.
Social networks often show sudden bursts of activity. By analysing meme stocks, the authors provide a proof-of concept for a generic endogenous mechanism that explains the emergence of financial bubbles. The theory correlates their size with the structure of social networks, emphasizing how influential individuals tend to impact others in a top-down manner.
Cavity-solitons in microresonator-filtered fibre lasers are robust states with self-recovery capabilities that emerge when a delicate balance of energy-dependent nonlinearities is achieved. In this work, the authors make use of the dispersive Fourier transform to understand the dynamics leading to a soliton bonded with a quasi-continuous wave.
Synthetic dimensions have drawn a lot of attention in photonics recently, where many physical phenomena have been explored. This work, on the other hand, utilizes the temporal synthetic dimension to solve a technical problem that is otherwise challenging, and showcases the generation of tera-sample-per-second arbitrary waveforms with extreme flexibility, which offers new possible solutions in many application-related problems.
Detecting molecular chirality is both challenging and vital. By linking the concepts of chirality and topology, including the derivation of the Berry phase and Berry curvature in chiral molecules, the authors show that the geometrical magnetism generated by ultrafast electron currents yields an efficient set of enantiosensitive observables.
The interplay between magnetism and non-trivial topological band structures in magnetic topological insulators can give rise to further exotic physical phenomenon. Here, the authors investigate the magnetic and electronic properties of EuZn2As2 under high-magnetic fields and low-temperatures and discuss what the observations can tell us about the interplay between magnetism and electronic topology in this system.
Systems that synchronize in nature are intrinsically different from one another, with possibly large differences from system to system. Here we study how heterogeneity affects the emergence of synchronization in networks of coupled oscillators and explain why parameter heterogeneity sometimes hinders and sometimes favors network synchronization.
Exceptional points (EPs) with inherent polarization decoupling, amplitude and wavelength modulation properties, provide a tool for multi-optical-parameter modulation. Leveraging deep learning, the authors observe topological charge conservation and utilize the topologically protected optical parameter distribution around EPs to introduce two kinds of multifunctional optical devices.
